Sodium Concentration Research Articles

Hyponatremia in Critically Ill Patients Due to Continuous Venovenous Hemofiltration With Diluted Sodium Citrate.

Continuous venovenous hemofiltration (CVVH) is frequently performed in critically ill patients using diluted citrate for regional anticoagulation. The impact of this renal replacement strategy on plasma sodium has not been evaluated yet. Our aim was therefore to assess the period prevalence of hyponatremia (sodium <135 mmol/L) during CVVH and discuss possible underlying mechanisms. After 48 hours of treatment, 70% of the 27 oligo-anuric critically ill patients were hyponatremic, despite the use of dialysis fluid bags (Regiocit 18/0, Phoxilium by Baxter, Deerfield, IL, and Multibic K2 by Fresenius Medical Care AG & Co. KGaA, Bad Homburg, Germany) with sodium content of 140 mmol/L. Indeed, sodium decreased from 142 ± 7 to 135 ± 3 mmol/L, p < 0.001. Sodium concentrations of employed dialysis bags were confirmed using ion chromatography. However, ionized sodium of Regiocit measured with a direct-ion selective electrode (ISE) resulted lower (~118 mmol/L), suggesting the presence of sodium-to-citrate complexes. Possible mechanisms explaining the hyponatremia development could therefore include: i) plasma water dilution; ii) a reduced Gibbs-Donnan effect, given the low albumin concentration (2.6 ± 0.8 g/dl) of our critically ill patients; iii) a negative sodium balance due to the loss of sodium-to-citrate complexes across the filter. The clinical implications of the described hyponatremia and the different contributions of the hypothesized mechanisms need to be addressed in future studies.

Urine chloride trajectory and relationship with diuretic response in acute heart failure.

Sodium excretion is a well-defined marker used to assess diuretic response in acute heart failure (AHF). Despite a strong pathophysiological background, the role of urine chloride excretion has not been described and established yet. We aimed to evaluate chloride trajectory during intensive diuretic treatment in AHF patients and examine its potential role in predicting poor diuretic response. The study was conducted on 50 AHF patients. Participants were included within the first 36h of hospitalization. They received furosemide dose adjusted for body weight (half in bolus, half in 2h infusion). Post-diuretic hourly urine collection with biochemical analysis was performed. In general, the concentrations of urine chloride (uCl-) and sodium (uNa+) at the baseline samples exhibited a comparable level (71±39 vs. 70±44mmol/L, respectively; P=0.99), but across all post-furosemide study timepoints, uCl- remained significantly higher than uNa+ since 1 to 6h of the study. In this course, both ions (uCl- and uNa+) reached peak values in 2h (114±28 vs. 97±34mmol/L, respectively; P<0.01). The pattern of uCl- dominance over uNa+ concentration was also observed in separate analyses of patients naïve to furosemide and those chronically exposed to furosemide. Regardless of these patterns, naïve to furosemide individuals excreted more ions (both uCl- and uNa+) than chronically exposed patients at all timepoints. Additionally, a strong, linear correlation between uCl- and uNa+ was observed in each post-furosemide timepoint (the strongest in 1h r=0.87; P<0.001). Both interdependent ions concentration was almost parallel when analysed in chronic furosemide users and those naïve to furosemide separately [uCl-=0.85*uNa++28.82, P<0.001, R2=0.83 for chronic furosemide users, and uCl-=0.72*uNa++41.55, P<0.001, R2=0.65 for naïves to furosemide (linear regression model)]. Moreover, uCl- (with cutoff point: 72mmol/L) was a satisfactory predictive factor for poor diuretic response (<100mL/h in 6h since the beginning of furosemide infusion) [odds ratio (OR) 95% confidence interval (CI): 39.0 (3.8-405.00)]. It presented those properties also after adjusting for urine creatinine [cutoff point: 0.296mmol/mg-OR (95% CI): 81.0 (8.0-816.0)]. Urine chloride and sodium are highly interrelated during decongestion of AHF patients. The uCl- (cutoff 72mmol/L) exhibits better prognostic abilities to identify poor diuretic response than uNa+.

Effect of NaCl partial replacement by KCl, Ca-ascorbate, and spent hen meat hydrolysate on the physicochemical properties and quality of Cantonese sausage.

A large amount of NaCl is usually used to provide a unique flavor and extend the shelf life of meat products. However, excessive sodium intake may cause diseases such as cardiovascular diseases. Spent hen meat hydrolysate (SHH) as an efficient NaCl substitute was developed with inefficient research related to SHH application in food systems. Therefore, the effects of NaCl replacement with SHH, KCl, and Ca-ascorbate on the quality of low-sodium Cantonese sausage were investigated. Four groups of salt formulation, I (100% NaCl), II (NaCl/KCl/Ca-ascorbate=60%/30%/10%), III (NaCl/KCl/Ca-ascorbate/SHH=50%/30%/10%/10%), and IV (NaCl/KCl/Ca-ascorbate/SHH=30%/30%/10%/30%), were used to produce Cantonese sausages. The moisture and nitrite content decreased, the microbiological growth was inhibited, and the protein content increased after adding SHH for Cantonese sausages with NaCl substitution degrees of 50% and 70%. The saltiness, overall flavor, color, and texture of low-sodium Cantonese sausages with SHH were maintained or improved compared to the Cantonese sausage without sodium replacement. The proportion of peptides with molecular weight<1kDa in Cantonese sausages increased after adding SHH, which may improve the overall flavor by interacting with peptides or other compounds. SHH combined with KCl and Ca-ascorbate is an efficient NaCl substitute, which can maintain and even improve Cantonese sausage quality and reduce sodium content up to 70%. These findings offer a promising reference for SHH application in the food industry and promote the development of salt taste-enhancing hydrolysate in food science.

Quantitative analysis of sodium concentration in condiments, soft drinks and mineral water by external standard 23Na-qNMR.

Sodium is essential for human health, but excessive intake can lead to hypertension. Accurate sodium labeling in foods is critical due to increasing health awareness. This study investigated the use of 23Na nuclear magnetic resonance spectroscopy (NMR) for sodium quantification in condiments, soft drinks and mineral water. In this study, external standard quantitative 23Na-NMR was used to measure sodium concentrations. Key steps included sample preparation, 90° pulse width calibration, and linewidth evaluation. The results showed that 23Na-NMR can accurately quantify sodium concentrations over a wide range, with good agreement with ion electrode methods. The results demonstrated that 23Na-NMR is a reliable method for the quantification of sodium in various liquid foods.

Venous Excess Ultrasound Score Is Associated with Worsening Renal Function and Reduced Natriuretic Response in Patients with Acute Heart Failure.

Background: The venous excess ultrasound score (VExUS) is used to objectify systemic venous congestion. The aim of the paper was to determine the association between VExUS grades and worsening renal function (WRF), reduced natriuretic response, diuretics resistance, and mortality in patients with acute heart failure (AHF). Methods: One hundred patients were included, and Doppler ultrasound of hepatic, portal, and renal veins was performed. Severity of congestion was graded using the VExUS score (grade 0, 1, 2, or 3). Sodium concentration in a spot urine sample was assessed in 2 h after the first loop diuretic administration and was adjusted for the prescribed dose of furosemide (31 mmol/40 mg). Diuretics resistance was defined as the need to double the starting dose of intravenous furosemide in 6 h. Results: Patients with VExUS grade 3 showed a higher incidence of WRF (OR: 11.17; 95% CI: 3.86-32.29; p < 0.001) and a decreased natriuretic response: a spot urine sodium content of <50 mmol/L (OR: 21.53; 95% CI: 5.32-87.06; p < 0.001) and an adjusted spot urine sodium content of <31 mmol/40 mg (OR: 9.05; 95% CI: 3.15-25.96; p < 0.001). The risk of diuretic resistance (OR: 15.31; 95% CI: 5.05-46.43; p < 0.001), as well as the need for inotropic and/or vasopressor support (OR: 11.82; 95% CI: 3.59-38.92; p < 0.001), was higher in patients with severe congestion. The hospital mortality rate increased in patients with VExUS grade 3 compared to in patients with other grades (OR: 26.4; 95% CI: 5.29-131.55; p < 0.001). Conclusions: Patients with AHF and VExUS grade 3 showed a higher risk of developing WRF, a decreased diuretic and natriuretic response, a need for inotropic and/or vasopressor support, and a poor prognosis during their hospital stay.

Impact of Boiling on Composition of Oven-Dried Curcuma Longa Linn Rhizomes

The effect of boiling Curcuma longa Linn rhizomes prior to oven drying on its proximate, mineral and phytochemical composition was studied. Fresh turmeric rhizomes were sliced to 5 mm thickness and then divided into two parts. The first part was oven dried directly while the second part was boiled prior to oven drying. Both products were then pulverised and subjected to laboratory analysis following standard procedures of AOAC and spectrometry. Boiling had an impact on the proximate composition as there were significant (P&lt;0.05) reductions in ether extract, crude fibre and crude protein. Sodium, calcium, potassium and phosphorus contents were significantly reduced with a significant increase in levels of magnesium, zinc and iron (P&lt;0.05). Significant reductions in phytochemicals due to boiling prior to oven drying were also recorded (P&lt;0.05). This experiment therefore shows that boiling Curcuma longa Linn rhizomes prior to oven drying could be of pharmacological importance.

Joint association of serum sodium and frailty with mild cognitive impairment among hospitalized older adults with chronic diseases: a cross-sectional study.

To examine the associations of serum sodium and frailty with the risk of mild cognitive impairment (MCI) among hospitalized older adults with chronic diseases. A cross-sectional study was conducted in 403 hospitalized older adults with chronic diseases. Serum sodium concentration was assessed by the ion-selective electrode method, frailty status was evaluated by the FRAIL scale, and MCI was determined by the Montreal Cognitive Assessment (MoCA). Multiple logistic regression models were used to estimate the associations of serum sodium and frailty with MCI. Participants with the lowest tertile of serum sodium had a higher risk of MCI than those in the middle tertile group (OR = 1.75, 95% CI: 1.01-3.04). Below 143 mmol/L, the risk of MCI was 1.38 (95% CI: 1.03-1.84) for per 1 SD decrease in serum sodium. Compared with the robust group, frailty was significantly associated with an increased risk of MCI (OR = 3.94, 95% CI: 1.92-8.10). Moreover, in comparison with participants with the middle tertile of serum sodium and who were robust/prefrail, those with frailty and either the lowest (OR = 5.53, 95% CI: 2.08-14.67) or the highest tertile of serum sodium (OR = 3.48, 95% CI: 1.20-10.05) had higher risks of MCI. Both lower and higher serum sodium impose a significantly higher risk for MCI in older adults with frailty. This could inform the design of clinical trials and the development of guidelines and recommendations for correcting serum sodium and frailty in hospitalized older adults with chronic diseases.

Central diabetes insipidus in two related juvenile deerhounds

AbstractTwo related juvenile deerhounds were evaluated 2 years apart because of polydipsia, pollakiuria and periuria. Until shortly before presentation, each dog lived outdoors from 6 weeks of age with its littermates, and each litter shared a single drinking water source. Physical examination findings were unremarkable. The most noteworthy laboratory finding was hyposthenuria, although both dogs also had serum sodium concentrations at the upper end of the laboratory reference range. Both dogs responded to treatment with desmopressin acetate eye drops, which relieved their clinical signs and increased their urine specific gravities, confirming a diagnosis of central diabetes insipidus. To the best of the authors’ knowledge this is the first report of diabetes insipidus in deerhounds and only the third report to suggest that central diabetes insipidus might be heritable in dogs, as it is in humans.

The Role of Natriuretic Peptides in the Management of Heart Failure with a Focus on the Patient with Diabetes.

Natriuretic peptides (NPs) are polypeptide hormones involved in the homeostasis of the cardiovascular system. They are produced by cardiomyocytes and regulate circulating blood volume and sodium concentration. Clinically, measurements of brain natriuretic peptide (BNP) and N-terminal pro-BNP (NT-proBNP) are recommended by international guidelines as evidence is accumulating on their usefulness. They have a high negative predictive value, and in the setting of low NPs, a diagnosis of heart failure (HF) can be safely excluded in both emergency (BNP < 100 pg/mL, NT-proBNP < 300 pg/mL) and outpatient settings (BNP < 35 pg/mL and NT-proBNP < 125 pg/mL). Moreover, the 2023 consensus from the European Society of Cardiology suggests threshold values for inclusion diagnosis. These values are also associated with increased risks of major cardiovascular events, cardiovascular mortality, and all-cause mortality whether measured in inpatient or outpatient settings. Among patients without known HF, but at high risk of developing it (e.g., in the setting of diabetes mellitus, hypertension, or atherosclerotic cardiovascular disease), NPs may be useful in stratifying cardiovascular risk, optimizing therapy, and reducing the risk of developing overt HF. In the diabetes setting, risk stratification with the use of these peptides can guide the physician to a more informed and appropriate therapeutic choice as recommended by guidelines. Notably, NP levels should be carefully interpreted in light of certain conditions that may affect their reliability, such as chronic kidney disease and obesity, as well as demographic variables, including age and sex. In conclusion, NPs are useful in the diagnosis and prognosis of HF, but they also offer advantages in the primary prevention setting.

Controllable mechanism of hazardous jarosite transformation into recyclable hematite in the leaching solution of secondary zinc oxide powder

The controlled synthesis of recyclable hematite in the leaching solution of secondary zinc oxide powder is an urgent problem in the chemical industry and metallurgy fields. In this paper, the effects of the temperature, agitation speed, and seed addition on the contents of iron, sulfur, potassium, sodium, and zinc in the iron removal residues, as well as the iron concentration in the supernatant after iron removal were systematically studied. In addition to the temperature control already reported, we found that the agitation speed can also control the transformation between jarosite and hematite phases. The content of jarosite in the residues can be effectively controlled by adjusting the agitation speed, thereby significantly improving the quality of hematite product, as indicated by SEM-EDS and XRD results. Under temperature of 185 °C, an agitation speed of 500 rpm, and a seed addition of 15 g/L, the iron, sulfur and zinc contents in the filter residues and the iron concentration in the supernatant were 59%, 3.22%, 0.92%, and 4.182 g/L, respectively. Kinetic studies show that the rapid oxidation kinetics is not conducive to the formation of high-quality hematite products. These results can directly guide the process of transformation of harmful jarosite into recyclable hematite from the leaching solution of secondary zinc oxide powder, which is of great practical significance for the controlled and waste-free removal of iron from aqueous solutions in the chemical industry and metallurgy fields.

Construction of all-solid-state ion-selective sensors using electrolyte-containing polymers.

All-solid-state NO3-, K+, NH4+, Na+, and Ca2+ ion-selective sensors (ISEs) were prepared using polyvinyl butyral (S-LEC®K KX-5). In the present case, polyvinyl butyral was used as a porous material to keep the internal solution of the respective ISE. All sensors exhibited near-Nernst responses in the concentration region between approximately 10-5 and 0.1moldm-3. To avoid the influence of KCl as interfering ions, MgSO4 was used as an electrolyte within the salt bridge. Although the liquid junction potential was generated, the potential difference was stabilized within about few minutes. The NO3--ISE showed high stability with no potential drift during 12h of continuous measurements and maintained high sensitivity even after 3weeks of storage in ultrapure water. Solidification of the internal solution is expected to make the sensor smaller and increase its mechanical strength. As an actual measurement, the sodium concentration in plasma samples using the Na+-ISE was measured to confirm agreement with literature values.

Advances in Research on the Improvement of Low-Salt Meat Product Through Ultrasound Technology: Quality, Myofibrillar Proteins, and Gelation Properties.

The high sodium content in meat products poses health risks to consumers and does not align with modern green and healthy living standards. Current strategies for directly reducing the sodium content in meat products are limited by their negative impact on the sensory or quality attributes of the products. In recent years, there has been great interest in applying ultrasound technology to reduce sodium content. This paper discusses the advantages and disadvantages of current mainstream strategies for reducing the sodium content in meat products, as well as the potential mechanisms by which ultrasound-assisted marination improves the quality of low-salt meat products. The main findings indicate that ultrasound, through its cavitation and mechanical effects, facilitates the transition of proteins from stable insoluble aggregates to stable soluble complexes, exposing more hydrophilic groups and, thus, enhancing protein solubility. At the same time, ultrasound promotes a greater number of proteins to participate in the formation of interfacial layers, thereby increasing emulsifying activity. Furthermore, ultrasound treatment promotes the interaction between proteins and water, leading to partial unfolding of protein chains, which allows polar residues to more readily capture water in the gel, thereby improving the water-holding capacity of the gel. These effects will contribute to the formation of high-quality low-salt meat products. However, variations in the frequency, intensity, and duration of ultrasound treatment can lead to differing effects on the quality improvement of low-salt meat products.

Assessing suitability of surface water from Oued El Gourzi for irrigation east of Alger

The study was conducted to determine the suitability of surface water from Oued El Gourzi for irrigation in the Fesdis area, Algeria, during irrigation season of July 2022. The suitability was assessed by analysing eight water samples collected from various sites along the Oued. A range of physicochemical parameters were examined, including EC, pH, Mg2+, Na+, Ca2+, K+, HCO3– and Cl–, alongside other indices such as sodium absorption ratio (SAR), soluble sodium percentage (SSP), residual sodium carbonate (RSC), permeability index (PI) and magnesium adsorption ratio (MAR) using standard procedures. The Richards classification shows that these waters are characterised by high salinity and low alkalinity hazard (C3–S1). According to the Wilcox classification, the majority of these waters are of doubtful quality, with only 25% exhibiting good quality for irrigation. Based on the RSC and MAR, all water samples are deemed safe and suitable for irrigation. However, PI values suggest that all sampling sites are of marginal quality for irrigation (class II). In terms of sodium and chloride concentration, all water samples were deemed unsuitable for irrigation. Based on these results, the waters pose risks for irrigation, particularly due to salinity, necessitating the implementation of special management practices and the selection of salt-tolerant crops.

Soil Analysis by Mobile Multinuclear NMR: Quantification of Phosphorus, Aluminum, and Sodium.

Soil analyses are essential to ensure economically and environmentally sustainable crop production while maintaining the soil fertile for future use. Unfortunately, common soil analyses may be highly demanding in terms of time, chemicals, and costs. This applies, in particular, when total quantities of elements are desired. As an easy and fast alternative without consumption of chemicals, we here present mobile 31P, 27Al, 23Na, and 1H NMR for quantification of phosphorus, aluminum, and sodium contents in soil. This enables accurate on-site analysis and is suitable for direct measurement on fresh, undried soil samples since the water content is quantified as well. For demonstration, 40 various Danish agricultural soil samples were analyzed using a mobile NMR sensor, and the results were compared with external laboratory analyses for P, Al, and Na. The laboratory analyses were conducted with ICP-OES after four-acid digestion, which additionally were compared with aqua regia digestion, showing inadequacies in the performance of the latter. Good agreement between NMR and laboratory analyses (correlation coefficients 0.91 for P, 0.98 for Al, and 0.90 for Na, in the concentration ranges 250-1200 ppm P, 1.4-5% Al, and 0.3-1% Na) were obtained with high accuracy using NMR measuring times of 20 min to 1 h for P, 4-12 min for Al, and 6-20 min for Na. Additionally, the NMR measurements provide information on the amount of P associated with paramagnetic centers (e.g., Fe3+). Good correlations were also observed to other parameters such as the clay content, which is predictable from the intensity of the more fast-relaxing of three 27Al NMR components.

Plant growth promoting bacteria promote rice growth cultivated in two different sandy soils subjected distinct climates conditions.

Sandy soils contain around 70% sand in their composition, making them highly fragile and susceptible to land degradation. Practices such as no-tillage cultivation, the use of bioinoculants, and the application of organic amendments can restore the organic matter in these soils, ensuring sustainable production. In this context, this work aimed to study the microbiological aspects of two sandy soil areas (Brazilian Northeast and South) under contrasting climatic conditions (tropical and temperate). With this purpose, prokaryotic communities were evaluated, and the plant growth-promoting potential of isolated bacteria was assessed by rice inoculation in sandy soil. Despite the high sand content in both soils, soil from the NE was related to the highest phosphorous, calcium, potassium, copper, sodium, zinc, magnesium, and manganese contents, organic matter percentage, and pH. The Shannon diversity index indicated that prokaryotic communities in NE were more diverse than in SU, and PCA revealed that microbial composition exhibited distinct patterns. The rice inoculation experiments were executed to verify if the bacterial isolates displayed a similar growth promotion potential when inoculated in sandy soil areas subjected to different climatic conditions. When all PGP characteristics evaluated were pooled in a PCA, a similar pattern was observed for SU and NE. Burkholderia sp. SU94 was related to highest PGP characteristics evaluated. Paraburkholderia sp. NE32 showed similar results to those of the non-inoculated control. This similar effect of rice growth in the Northeast and South of Brazil suggests that isolate SU94 adapts to different environmental conditions.

Serum sodium concentration predicting mortality in patients with aneurysmal subarachnoid hemorrhage

BackgroundTo date, inconsistent evidence exists on the role of hypernatremia in patients with aneurysmal subarachnoid hemorrhage (aSAH) who underwent surgical clipping. We aimed to investigate the association between serum sodium and mortality in these patients. MethodsA cohort study was performed to include adult patients with aSAH who underwent surgical clipping in a university hospital. The primary outcome was follow-up mortality. Propensity score matching (PSM) was used for matching patients’ baseline characteristics. Net reclassification improvement (NRI), and integrated discrimination improvement (IDI) were calculated to assess and compare the reclassification and discrimination capacity of different models. Trends in serum sodium over time were detected by the ordinary least squares model. ResultsOf 618 aSAH patients with surgical clipping during the study period, normal serum sodium was observed in 467 patients (75.6 %), and admission hypernatremia was noted in 151 patients (24.4 %). After adjustment with multivariate regression analysis, patients with hypernatremia had significantly higher odds for follow-up mortality (aOR: 2.86, 95 % CI: 1.54 to 5.30; P = 0.001). PSM analysis observed similar results (aOR: 2.38, 95 % CI: 1.29 to 4.55; P = 0.009). The incorporation of serum sodium during hospitalization markedly enhanced the IDI (P < 0.001) and NRI (P < 0.001) for the prediction of mortality. ConclusionsIn conclusion, the findings from this cohort study of aSAH patients with surgical clipping indicated that serum sodium can be an independent predictive factor of all-cause mortality, and inferior sequelae in aSAH patients. These findings endorsed the importance of managing hypernatremia and monitoring serum sodium in patients with aSAH.

Assessment of the Response to Fertilization for the Sustainable Management of Native Grasses from Flooded Savannah Ecosystem Arauca, Colombian Orinoquia

The native grasses of the flooded savannah ecosystem are produced under natural conditions and there is little information on the productive and nutritional response to the application of fertilizers. They are proposed as a strategy for adaptation to climate change and for the sustainable development of livestock farming. The aim of the study was to evaluate the response to low doses of fertilization of native grasses (“bank” grasses: Paspalum plicatulum, Panicum versicolor, and Paspalum sp. “Low” grasses: Leersia hexandra and Hymenachne amplexicaulis) in flooded savannah conditions. The green forage samples were taken in a 1 m2 frame at 28-, 35-, and 42-day cutting intervals and biomass production was estimated with and without fertilization. After 35 days, the nutritional composition was analyzed by near-infrared reflectance spectroscopy (NIRS). The effect of fertilization and the grasses × cutting interval interaction influenced (p &lt; 0.05) green forage (GF, t/ha) and dry matter (DM, t/ha). The effect of fertilization and the grasses × fertilization interaction on the nutritional composition only influenced the content of calcium (Ca2+) and magnesium (Mg2+) in the “low” grasses, while in the “bank” grasses, it influenced the sodium (Na) content (p &lt; 0.05). The application of fertilizers generated significant differences in forage yield, but not in the general nutritional composition of grasses. However, some numerical variations were observed in favor of fertilized grasses. According to these results, the application of fertilizers will not be required to increase the value of the nutritional composition. Native grasses constitute an important sustainable food resource for livestock in flooded savannah ecosystems. This study constitutes the first approximation to understanding the behavior of native grasses for sustainable management in the flooded savannah ecosystem.

Validation of a Remote Sampling Sensor for Measuring Urine Volume and Nitrogen Concentration in Grazing Dairy Cattle.

The purpose of this research was to validate a urine sensor (Lincoln University PEETER V2.0, Canterbury, New Zealand) that records the time and volume of urination events for dairy cows in addition to collecting a proportional urine sample from all urination events. Sixteen multiparous Holstein × Jersey mid-lactating cows (101 ± 5 days in milk, 498 ± 24.2 kg body weight, 26.2 ± 3.07 kg/d milk yield; mean ± standard deviation) were allocated herbage diets ranging in protein and sodium content to generate a range of urine volumes and urine nitrogen (UN) concentrations. Total collection of individual urination events occurred during a 72-h measurement period where PEETER V2.0 sensors were attached to cows. A mixed model ANOVA using lme4 package (version 1.1-35.5) in R (version 4.3.3) were used to compare the means. The average urine event size was 2.65 ± 1.1 L for total collection by observers and 2.68 ± 1.1 L as recorded by the sensor (mean ± standard deviation; p = 0.730). The urine nitrogen concentration was 5.76 ± 1.2 g N/L for samples collected by observers and 5.85 ± 1.3 g N/L for the samples collected by the sensor (p = 0.583). The calculated UN excretion was 156 ± 45.1 g/day for direct measurements and 162 ± 40.0 g/day for the sensor (p = 0.539. Contrasts with simultaneously measured data were undertaken using Lin's Concordance Correlation Coefficient (CCC) and a Pearson correlation coefficient (r). Correlations between the actual values and sensor values were strong, with little to moderate variability in the urine volume (CCC = 0.936, r = 0.937; n = 222), UN concentration (CCC = 0.840, r = 0.837, n = 48) and total UN excretion (CCC = 0.827, r = 0.836, n = 24). Considering the findings, the PEETER V2.0 urine sensor has the potential to reliably measure urine volumes and UN concentrations for estimations of the UN excretion of dairy cattle under grazing systems.

Impact of Ultra-Processed Foods on Food Sustainability: Exposure Assessment and Health Implications.

Excessive consumption of ultra-processed food (UPF) is a global health concern as-sociated with an increased incidence of non-communicable diseases. UPFs are characterized by their extensive industrial processing and high content of additives, preservatives, chemicals, and artificial ingredients that are used to mask defects or inferior ingredients of end food products, presenting a multifaceted challenge to contemporary society. Exposure assessment showed that almost 50% to 30% of the energy consumption per day comes from UPFs. The more processed a food is, the less likely it is to be healthy and nutritious. UPFs affect human health by increasing the risk of obesity, heart disease, cancer, depression, diabetes, etc., as these foods are typically made up of a large number of preservatives, high content of fats, sodium, and sugars, and low contents of protein, fiber, and potassium. The ingredients required for the production of UPFs are commonly derived from intensive monoculture and livestock of raw foods. This, in turn, exerts imminent effects on agriculture, biodiversity, and the global food system by altering the bioavailability of nutrients within agricultural soil, thereby increasing the dependency on ferti-lizers and insecticides. Recent studies have shown that over-consumption of UPF has an effect on culinary traditions, loss of biodiversity, human well-being, and food system sustainability. Therefore, for better food system sustainability, the consumption of UPFs should be reduced, and we should move toward minimal processing technologies, preferably for seasonal and or-ganic local products. Based on available data, there is an urgent need to implement policies and regulations for the agro-food industry to include nutritional and environmental criteria. This review explains the different dimensions of UPFs in relation to health, nutrition, environment, current challenges, future innovations, and wider sustainability concerns.

Productive, Morphological and Nutritional Indicators of Cactus Pear in a Semiarid Region

This study aimed to evaluate the effect of irrigation depths (IDs) with brackish water and levels of organic fertilizer (OF) on the morphological aspects, production, chemical composition and in vitro digestibility of cactus pear grown in a semiarid region. This experiment was conducted in an area already established for 2 years with cactus pear [Opuntia stricta (Haw.)] and started 18 months after the standardization cut. This was a 5 × 4 factorial design of five irrigation depths (0, 12.5, 25, 37.5 and 50% evapotranspiration—ETo) and four levels of organic fertilizer (0, 15, 30, and 45 megagram per hectare—Mg/ha), with four replications. The water used in the experiment was classified with high salinity and low sodium content (C3S1), and presented an electrical conductivity of 1.73 dS/m. There was no effect of the ID × OF interaction on the morphological and productive characteristics of cactus pear (p &gt; 0.05); however, the ID × OF interaction promoted effects on ether extract, crude protein, neutral detergent insoluble protein, neutral detergent insoluble ash, total carbohydrates and non-fiber carbohydrates (p &lt; 0.05). The ID and OF levels separately influenced the productive, morphological and nutritional characteristics of cactus pear. Under experimental conditions, we recommend the use of organic fertilizer at a level up to 45 Mg/ha, which is associated with the use of lower brackish water levels for the cultivation of cactus pear. This study’s findings provide new insights into reducing the use of potable water in crop irrigation for dryland regions and other regions.