Rice Drinks Research Articles

Physicochemical Properties and Nutritional Relevance of Rice Beverages Available on the Market

Recently, more consumers have reached for plant-based milk substitutes, mainly for health, dietary, and flavour reasons. This study aimed to evaluate the physicochemical and bioactive properties and sensory profile of 10 selected rice drinks available on the EU market. Assessment of the physicochemical characteristics included measurement of soluble solids, pH, osmolality, foaming properties and colour parameters. Analysis of bioactive compounds involved the determination of polyphenolic compounds and antioxidant activity. Based on the manufacturer’s data, the composition and nutritional value of the above-mentioned beverages were also analysed in this study. The tested beverages were characterised by a low fat content of 0.6–1.3 g/100 mL, derived mainly from added sunflower oil, but are a good source of energy (energy value of 37–55 kcal/100 mL), derived mainly from naturally occurring carbohydrates whose content ranged from 8.0–11.0 g/100 mL. The protein content of all rice drinks was shallow, not exceeding 0.5 g/100 mL. Of the ten rice drinks analysed, in only two were vitamins B12 and D added (0.38 μg/100 mL and 0.75 μg/100 mL, respectively) and in only three was calcium (120 mg/100 mL) added. In evaluating the physicochemical characteristics, the drinks showed a pH close to neutral (mean 6.85 ± 0.01). The average soluble solids content was about 11%, which was determined by the carbohydrate content. The osmolality of the beverages averaged 324.73 ± 70.17 mOsm/kg H2O, with four beverages classifiable as hypertonic ones (osmolality > 330 mOsm/kg H2O), three as isotonic ones (with osmolality between 270–330 mOsm/kg H2O), and three as hypotonic beverages (osmolality < 270 mOsm/kg H2O). Only two rice drinks evaluated in this study showed foaming properties. The high whiteness index (81.79 ± 2.55) indicated high white colour saturation of the tested beverages. The rice drinks were characterised by a relatively diverse sensory quality regarding aroma and flavour notes. The overall sensory quality was rated highest for the beverages with the highest sugar content. The tested beverages were characterised by a low content of total polyphenols (average 1.40 ± 0.62 mg GAE/100 mL) and relatively high antioxidant activity (average 418.33 ± 59.65 µM TEAC/100 mL). Based on the research conducted and the analysis of the manufacturer’s data, it can be concluded that the rice drinks studied in this paper can be included in the daily diet, providing a rehydrating beverage that shows free radical-neutralizing properties and provides carbohydrates. At the same time, it should be highlighted that the studied drinks have a low nutritional value and cannot be recommended as milk substitutes due to low protein levels and lack of milk-specific vitamins and minerals.

Estimation of Nutrient Content of Unfermented and Fermented Rice Drinks

Estimation of Nutrient Content of Unfermented and Fermented Rice Drinks

A comparison of the quality of UHT milk and its plant-based analogs

The aim of this study was to compare selected physical (density) and physicochemical (color, pH, titratable acidity) properties and the fatty acid profile of dairy UHT milk and its plant-based analogs, i.e., almond, soy, rice, oat, and coconut beverages. Ten products of each type were analyzed in each group. UHT milk was characterized by higher values of color lightness (L*) and titratable acidity than all plant-based milk alternatives, higher yellowness (b*) than rice drink, higher density than almond drink, and higher pH than rice and coconut drinks. In comparison with UHT milk, all plant-based beverages were characterized by higher redness (a*), soy drink was characterized by higher values of b* and chroma (C*), and almond and soy drinks had higher pH values. In the group of non-dairy beverages, the values of b* and C* were highest in soy drink, and the value of a* was highest in almond drink. Almond drink had the highest pH value, and soy and coconut drinks had the highest titratable acidity. Rice drink had higher density than oat, soy and almond drinks. The indicators characterizing the nutritional value of fat were considerably lower in coconut drink and dairy milk than in the remaining products. The values of UFA/SFA, MUFA/SFA, and DFA/OFA ratios and the indicator of nutritional value were highest in rice drink. The PUFA/SFA ratio and the total content of EFAs were highest in soy drink, and the n-6/n-3 PUFA ratio was highest in almond drink.

The Effects of Fermented Rice Drink With Lactiplantibacillus plantarum JSA22 in Overweight Irritable Bowel Syndrome Patients: A Randomized, Double-blind, Placebo-controlled Study.

This study aims to investigate the effect of a fermented rice drink with Lactiplantibacillus plantarum JSA22 on symptoms, blood tests, microbiomes, and fecal metabolites in patients with irritable bowel syndrome (IBS) who were overweight. Sixty overweight (body mass index ≥ 23 kg/m2) patients aged between 20 and 65 with IBS were enrolled. Patients were divided into 2 groups and administered either a fermented rice drink or an nonfermented rice drink for a month. The symptom questionnaire, blood samples, and stool samples for microbiome and metabolite were collected before and after the month of rice drink administration. The primary efficacy variable was the subject's global assessment of IBS symptoms. In both groups, global IBS symptoms, including abdominal pain, bowel habit, urgency, and abdominal distension, improved significantly (P < 0.01). The abdominal bloating was more significantly improved in the fermented rice drink group than in the nonfermented rice drink group (P < 0.05). Significant changes were not observed in metabolic syndrome-related blood tests or fecal metabolites in either group. However, microbiome analysis showed significant differences in genus levels before and after consuming fermented rice drink, such as in Blautia in stool (P = 0.020) and Prevotella (P = 0.017) and Oribacterium (P = 0.018) in saliva. The fermented rice drink with L. plantarum JSA22 showed a beneficial effect in reducing abdominal distension in IBS patients. Bacteria that reduce visceral fat accumulation increased in the stool and saliva of patients who consumed fermented rice drinks.

The Nutritional Value of Plant Drink against Bovine Milk—Analysis of the Total Concentrations and the Bio-Accessible Fraction of Elements in Cow Milk and Plant-Based Beverages

Four types of non-dairy (plant) drinks—almond, oat, rice, and soy—as well as cow milk with varying fat contents (1.5%, 2.0%, and 3.2%), were examined and compared in terms of the total concentrations of Al, As, B, Ba, Ca, Cd, Cr, Cu, Fe, K, Mg, Na, Mn, Ni, P, Pb, Sb, Se, Sr, and Zn using inductively coupled optical emission spectrometry (ICP OES). Additionally, in vitro gastrointestinal digestion was used to determine the bio-accessible fraction of selected elements, evaluating the nutritional value and risk assessment involved with the consumption of these beverages. A significant difference in the mineral profile was observed depending on the type of plant drink, with the highest content of elements noted in the soy drink and the lowest in the rice drink. Except for Ca and P, the soy drink appears to be a much better source of essential nutrients, including Cu, Fe, and Mn, than cow’s milk. A similar Ca content in plant beverages can be obtained only by adding calcium salt at the stage of its production. Interestingly, by using the multivariate data analysis, the average content of the selected elements (Cu, K, Na, P, and Zn) can be used both to differentiate dairy and non-dairy milk samples according to their type and to distinguish plant drinks from milk of animal origin. The bio-accessibility of essential elements (Ca, Cu, Fe, Mg, Mn, P, Zn) in cow milk was within 8.37–98.2% and increased with an increase in its fat content. Accordingly, by drinking 1 L of this milk daily, it is possible to contribute to the recommended dietary intakes of Ca, P, Cu, Mg, and Zn between 5.6–68%. Although the bio-accessibility of elements in the rice drink was the highest (9.0–90.8%), the soy drink seems to be the best source of nutrients in bioavailable forms; its consumption (1 L/day) covers the requirements of Cu, Mn, Mg, Ca, P, and Zn in 7.0–67%. Unfortunately, both groups of beverages are not important sources of Fe (plant drink) and Mn or Fe (cow milk) in the human diet. On the other hand, potentially toxic elements (Al, B, Ba) were found in them in a relatively inert form.

Effects of food matrix on the prebiotic efficacy of inulin-type fructans: a randomised trial

Abstract Recently there is much debate in the scientific community over the impact of the food matrix on prebiotic efficacy of inulin-type fructans. Previous studies suggest that prebiotic selectivity of inulin-type fructans towards bifidobacteria is unaffected by the food matrix. Due to differences in study design, definitive conclusions cannot be drawn from these findings with any degree of certainty. In this randomised trial, we aimed to determine the effects that different food matrices had on the prebiotic efficacy of inulin-type fructans following a standardised 10-day, 4-arm, parallel, randomised protocol with inulin either in pure form or incorporated into shortbread biscuits, milk chocolate or a rice drink. Similar increases in Bifidobacterium counts were documented across all four interventions using both fluorescence in situ hybridisation (pure inulin: +0.63; shortbread: +0.59; milk chocolate: +0.65 and rice drink: +0.71 (log10 cells/g wet faeces) and 16S rRNA sequencing quantitative microbiome profiling data (pure inulin: +1.21 × 109; shortbread: +1.47 × 109; milk chocolate: +8.59 × 108 and rice drink: +1.04 × 109 (cells/g wet faeces) (all ). From these results, we can confirm that irrespective of the food matrix, the selectivity of inulin-type fructans towards Bifidobacterium is unaffected, yet the compositional make-up of the food matrix may have implications regarding wider changes in the microbiota.

Sensory evaluation of selected plant-based milks and drinks

Introduction and purpose of work: Milk is a product that accompanies man from the first days of life. Due to the richness of minerals and vitamins, milk and dairy products should be introduced into the diet, as they have many health-promoting properties. In addition to traditional cow's milk, lactose-free milk and vegetable milk substitutes are available on the food market. The aim of the study was the sensory evaluation of selected milks and plant-based drinks available on the Polish market. Material and methods: The research material consisted of 7 types of milk, including 2 cow's milk and 5 plant milks of one of the brands available on the Polish market. 51 students of clinical dietetics (21 first-cycle students and 30 second-cycle students) joined the study. The taste of the products was assessed using a proprietary sensory evaluation card. A 5-point scale was adopted as the evaluation value. In addition, the ability to identify the type of milk through the sense of taste was tested. Results: Milk and vegetable drinks, according to the respondents, differed significantly due to sensory assessment. The milk samples that received the highest number of points contained the vegetable rice drink and lactose-free cow's milk (sample "B" and "F"). In contrast, the plant-based almond drink (sample "D") was rated the worst in taste. The greatest difficulty in identification occurred in the case of samples with code B and D (rice vegetable drink and almond vegetable drink). Conclusions: The almond plant drink was chosen as the least tasty by the vast majority of the respondents. On the other hand, the coconut vegetable drink had the best taste. Second-cycle students were more likely to identify samples correctly.

Arsenic in Rice: An Emerging Challenge in Context of Food Security

Arsenic speciation in food and diet was assessed for human exposure through dietary approaches because it seems as a critical public health issue all over the world. Globally, rice is a vital commodity in world hunger and vastly important for survival of human race. Rice is widely used for the formulation of baby formulas, breakfast cereals, bread, cookies, cakes, rice drinks and other foodstuff. Arsenic is concentrated at higher rates in rice grains and containing more than 85% of total arsenic forms that poses serious health aliments o human as well as animal life on the planet. Meanwhile, Arsenic contaminated water and soil may induce hazardous affects to humans through water-soil-plant pathway.

Quality assessment of japonica brown rice J02 (Oryza sativa L. J02) and its hydrolysis ability for the production of a rice-based drinkcontaining an abundance of dextrin

Plant-based beverages have become very popular in recent emerging markets. Brown rice milk offers several important health benefits because of its various nutritional ingredients such as proteins, carbohydrates, gamma-aminobutyric acid (GABA), and essential vitamins and minerals. Brown rice milk is also low in fats and cholesterol and free of lactose. In this study, japonica brown rice J02 from Thanh Hoa Province presented high nutrition with high protein (8.6% dm) and lipid (2.2% dm) contents as calculated from dry matter and GABA contents of 32 mg/100 g, which is suitable for the plant-based milk processing. J02 rice is also capable of hydrolysis to obtain high molecular sugar in the liquor with slow digestion ability (dextrose equivalent - DE&lt;40) and high hydrolysis efficiency (up to more than 90%). The results obtained from HPLC analysis indicated that the hydrolysis conditions for the rice drink at 75oC and 150 g/l starch produced Spezyme alpha concentrations at 0.024%w/w and low content in low molecular oligosaccharide (DP&lt;10) in the solution. The results indicated that Japonica rice J02 is a good candidate for the production of a rice-based drink.

The study of the nutritional and biological value of grain drink

The article presents the results of a study of the nutritional and biological value of grain drinks. The comparative analysis was made between fortified and non-fortified grain drinks, grain drinks were fortified with flaxseed flour to increase omega-3, resulting in a positive effect on the ω-6/ω-3 ratio. The aim of the study was to determine the change in the quality and composition of cereal drinks before and after enrichment with flaxseed flour. As a result of research, it was found that flaxseed flour increases the protein content in drinks. According to the content of fatty acid composition, grain drinks differ markedly from each other. On the basis of the conducted studies, it was proved that the enrichment of test samples with flaxseed flour had a positive effect on the content of Omega-3, as well as on the ratio ω-6/ω-3. The ratio of ω-6 to ω-3 in the developed products shows the following: rice drink, without enrichment - 0.67%, after enrichment was 3.23%, which indicates the correct ratio of ω-6 to ω-3; buckwheat drink, without enrichment - 0.81%, after enrichment - 3.76%, shows that enrichment has a positive effect on the ratio ω-6 / ω-3 and the content of ω-3 has become higher by 2.95%.The ratio of ω-6 to ω-3 in the developed products has reached optimal values, and the addition of a filler to grain drinks has increased the biological value of the product.

Water-in-Oil-in-Water Double Emulsions as Protective Carriers for Sambucus nigra L. Coloring Systems

The use of natural colorants is needed to overcome consumer concerns regarding synthetic food colorants′ safety. However, natural pigments have, in general, poor stability against environmental stresses such as temperature, ionic strength, moisture, light, and pH, among others. In this work, water-in-oil-in-water (W1/O/W2) emulsions were used as protective carriers to improve color stability of a hydrophilic Sambucus nigra L. extract against pH changes. The chemical system comprised water and corn oil as the aqueous and oil phases, respectively, and polyglycerol polyricinoleate (PGPR), Tween 80, and gum Arabic as stabilizers. The primary emulsion was prepared using a W1/O ratio of 40/60 (v/v). For the secondary emulsion, W1/O/W2, different (W1/O)/W2 ratios were tested with the 50/50 (v/v) formulation presenting the best stability, being selected as the coloring system to test in food matrices of different pH: natural yogurt (pH 4.65), rice drink (pH 6.01), cow milk (pH 6.47), and soy drink (pH 7.92). Compared to the direct use of the extract, the double emulsion solution gave rise to higher color stability with pH change and storage time, as corroborated by visual and statistical analysis.

OCENA MOŻLIWOŚCI ZASTOSOWANIA NAPOJÓW ROŚLINNYCH W RECEPTURZE CHLEBA BEZGLUTENOWEGO

Background. A gluten-free diet is the only treatment for diseases related to gluten intolerance. Bread is the basic ingredient of any diet. In recent years, we have observed an increase in the availability of gluten-free products on the Polish market, but their quality still differs from traditional products. The production of gluten-free food is associated with many technological difficulties in ensuring that products have the appropriate consistency and texture. Lactose intolerance is also relatively common in people who are newly diagnosed with celiac disease. Therefore, it seems advisable to undertake research aimed at replacing milk with plant-based drinks in a gluten-free bread recipe. The aim of the study was to determine the effect of the addition of plant drinks on the quality of gluten-free bread. Milk, soy, almond and rice drinks were used for baking. Gluten-free bread was subjected to a sensory evaluation. The weight, specific weight, volume, moisture, texture and color of the bread were also tested. Results and conclusion. The type of drink used affects both the taste, aroma, structure and texture. Breads with milk substitutes have a less noticeable taste of bread and yeast. However, in the assessment of sensory desirability, the best results were obtained in the case of gluten-free bread with the addition of a soy drink. It was found that the use of plant drinks did not significantly affect the weight after baking, specific weight and moisture. The use of plant-based drinks to obtain gluten-free bread may be an alternative for people on a vegan diet.

Consumption of Sinlek Rice Drink Improved Red Cell Indices in Anemic Elderly Subjects.

Iron fortifications are used for the treatment of iron-deficiency anemia; however, iron dosing may cause oxidative damage to the gut lumen. Thai Sinlek rice is abundant in iron and contains phytochemicals. We aimed at evaluating the effect of an iron-rice (IR) hydrolysate drink (100 mL/serving) on neurological function, red cell indices and iron status in elders. Healthy elderly subjects were divided into three non-anemic groups and one anemic group. The non-anemic groups consumed one WR (2 mg iron/serving) and two IR drinks (15 and 27 mg iron/serving) (groups A, B and D, respectively), while the anemic group consumed one IR drink (15 mg iron serving) (group C) every day for 30 days. There were no significant differences in the MMSE Thai 2002 and PHQ9 test scores for members of all groups, while the nutrition scores and body weight values of group D subjects were significantly increased. Hemoglobin (Hb) and mean corpuscular hemoglobin concentrations increased significantly only in group C. Serum iron and transferrin saturation levels tended to increase in group A, while these levels were decreased in members of group C. Serum antioxidant activity levels were increased in all groups, and were highest in group C. Thus, consumption of an IR drink for 15 days functioned to increase Hb and antioxidant capacity levels in anemic elders.

Effect of Fermented Rice Drink “Amazake” on Patients with Nonalcoholic Fatty Liver Disease and Periodontal Disease: A Pilot Study

The worldwide increase in nonalcoholic fatty liver disease (NAFLD) is a major public health problem. Obesity and diabetes are risk factors for NAFLD and the development of liver fibrosis is a risk factor for liver cancer. Periodontal disease bacteria can also exacerbate NAFLD. We previously reported that amazake, a traditional Japanese fermented food, improves the quality of life (QOL) of patients with liver cirrhosis. In this study, we investigated the effect of amazake intake on NAFLD patients with periodontal disease. Ten patients (mean age: 57.1 ± 19.2 years) consumed 100 g of amazake daily for 60 days. On days 0 and 60, their body mass index (BMI), body fat percentage, serum biochemical parameters, periodontal disease bacteria in saliva, and ten visual analog scales (VASs), namely, sense of abdomen distension, edema, fatigue, muscle cramps, loss of appetite, taste disorder, constipation, diarrhea, depression, and sleep disorder, were measured. For periodontal bacteria, the numbers of six types of bacteria in saliva (Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Aggregatibacter actinomycetemcomitans, Prevotella intermedia, and Fusobacterium necleatum) and P. gingivalis-specific fimA genotype were determined. After 60 days of amazake consumption, eosinophils (p &lt; 0.05), immune reactive insulin (IRI) (p &lt; 0.01), and HOMA-IR (p &lt; 0.05) had significantly increased and tumor necrosis factor α (TNFα) (p &lt; 0.01), muscle cramps (p &lt; 0.05), and depression (p &lt; 0.05) had significantly decreased. All subjective symptoms improved after amazake intake. No change was observed in the periodontal bacteria. In conclusion, amazake significantly decreased TNFα and improved the QOL of the patients with NAFLD and periodontitis. However, caution should be exercised because amazake, which is manufactured using techniques that lead to concentrations of glucose from the saccharification of rice starch, may worsen glucose metabolism in NAFLD patients. Amazake may be an effective food for improving the symptoms of a fatty liver if energy intake is regulated.

Two-stage processing for xylooligosaccharide recovery from rice by-products and evaluation of products: Promotion of lactic acid-producing bacterial growth and food application in a high-pressure process

In this study, we attempted to maximize arabinoxylan conversion into xylooligosaccharide (XOS) from rice husk and rice straw using two saccharification processes and evaluate the promotion of lactic acid-producing bacterial growth, including an investigation of the role of prebiotics in protecting probiotic bacteria in rice drink products in a high-pressure process (HPP). Hydrothermal treatment followed by enzymatic hydrolysis was designed for XOS recovery from rice husk arabinoxylan (RH-AX) and rice straw arabinoxylan (RS-AX). The hydrothermal treatment performed at 170 °C for 20 min and 180 °C for 10 min was the optimal condition to produce XOS liquor from rice husk and rice straw, respectively. Pentopan mono BG successfully recovered XOS from rice husk and rice straw residues at 50 °C, pH 5.5, an enzyme concentration of 50 U and 100 U/g substrate for 24 h. This design converted 92.17 and 88.34% (w/w) of initial RH-AX and RS-AX into saccharides, which comprised 64.01 and 59.52% of the XOS content, respectively. Rice husk xylooligosaccharide (RH-XOS) and rice straw xylooligosaccharide (RS-XOS) had degrees of polymerization ranging from 2 to 6 with some arabino-xylooligosaccharides. RH-XOS and RS-XOS were used to examine the promotion of the growth of lactic acid-producing bacteria strains in the presence of other prebiotics. RH-XOS and RS-XOS strongly promoted the growth of Lactobacillus sakei and Lactobacillus brevis, while other species showed weak to moderate growth. This study represents the first report of the powerful effect of Lactococcus lactis KA-FF1-4 on altering the utilization of XOS but not xylose. Furthermore, for the first time, we reported the capability of XOS to protect probiotics in rice drinks under high-pressure conditions. RH-XOS and RS-XOS resulted in the highest viability of approximately 11 log cfu/mL and exhibited no significant difference compared with the non-HPP treatment. Hence, rice husk and rice straw can be utilized as alternative prebiotic sources that provide biological activity and food applications in the HPP industry.

Volatilome changes during probiotic fermentation of combined soy and rice drinks.

Plant-based drinks as a substitute for animal milk consumption are crucial products in the food industry. Soy and rice drinks are the most successful milk substitutes but are low in fiber and protein contents, respectively, whilst being rich in sugars. Generally, an improvement is foreseen; thus, apart from supplement addition, a natural occurring strategy is functionalizing the drinks by beneficial bacteria fermentation. The aim of this work is to develop novel plant-based drinks assessing different mixtures of soy and rice milks fermented with single or multi-strain probiotics (Lactobacillus fermentum, L. plantarum, L. helveticus, Bifidobacterium bifidum, and B. longum). The drinks were characterized to study bacterial performances, by means of culture-dependent and -independent techniques, and their volatilome, by means of solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) analysis. Through multivariate analysis, these features were investigated and correlated to define accurate descriptors of the produced functional drinks. The results showed that combined drinks and multi-strain fermentation generated higher-value products. For example, combined drinks in comparison with single ones had a lower amount of toxic 2-acetyl-3,5-dimethylfuran and higher abundances of desirable compounds such as 2-butanone, 3-hydroxy and butanoic acid. Multivariate analysis of volatile metabolites and physiological parameters could offer a novel approach to assess the quality of functional plant-based drinks and result in a decisional tool for industrial applications.

Formulation of a low-protein rice drink fortified with caseinomacropeptide concentrate

A rice drink with low protein and fat contents was developed by response surface methodology. Effects of three factors, levels of white rice flour (3–8 % w/v) and xanthan gum (0.01−0.05% w/v) and process temperature (80−90 °C) on physical stability of the drink were evaluated. Viscosity, phase separation, sedimentation, color, particle size and zeta potential of the samples were measured as response variables. Models were developed from the data to predict response variables from the factors evaluated. Models for viscosity, particle size, color, zeta potential and phase separation of the drink were found significant while that of sedimentation was not significant. Significant models were then used in optimization to achieve selected response variables, minimum phase separation, particle size and viscosity and zeta potential in range of values measured in commercial samples of milk-like drinks. Optimum conditions were found to be 3% rice flour and 0.05% xanthan gum in formula and process temperature of 80 °C applied for 15 min. Sucrose addition at a level of (2.5% w/v) to the formula increased acceptability of the drink in sensory analysis but it had no significant effect on physical properties of the rice drink. The drink was fortified with a caseinomacropeptide (CMP) concentrate for development of a milk-like drink for consumers with phenylketonuria. Fortification with CMP concentrate resulted in partial neutralization of zeta potential, slight sedimentation and an increase in particle size of the drink. Color and zeta potential of the drink became closer to those of low fat milk by the addition of CMP concentrate.

Production, iron analysis and consumer perception of functional Thai Sinlek iron rice (Oryza sativa) drink

SummaryWe produced the iron rice (IR) drink, determined the relevant chemical composition and antioxidant activity and tested the consumers’ degree of satisfaction. IR grains were digested with α‐amylase and analysed chemical composition and antioxidant activity, while the hydrolysate (pH 4.0) and flavouring agents were added for final preparation of the IR drink. The IR hydrolysate contained a total iron content of 13.9 mg g−1, a total phenolic content of 1.33 ± 0.07 mg gallic acid equivalent g−1 and γ‐oryzanol of 70.12 ± 2.7 mg kg−1 rice grain, all of which inhibited the generation of free radicals in a concentration‐dependent manner. The IR drink was composed of flavonoids and phenolic acids for which kaempferol was predominant. The members of all three groups of elderly subjects who consumed the low‐dose IR (1.47 mg iron/100 mL), high‐dose IR (2.74 mg iron/100 mL) and white rice (WR; 0.5 mg iron/100 mL) drinks expressed satisfaction and interest with the beverages at 91.2%, 100% and 88.9%, respectively. In terms of sensory evaluation, the low‐dose IR drink revealed a higher acceptance rating than high‐dose IR and WR (P &lt; 0.05). Notably, the Sinlek rice drink was abundant with iron, anti‐oxidative phenolics and γ‐oryzanol, for which consumers expressed an overall degree of acceptance (8.1 ± 1.1).

Encapsulation of grape seed phenolics from winemaking byproducts in hydrogel microbeads – Impact of food matrix and processing on the inhibitory activity towards α-glucosidase

Hydrogel-based encapsulation systems were developed for grape seed phenolics recovered from winemaking byproducts. Proanthocyanidins, monomeric flavanols, flavonols and anthocyanins were extracted from grape seeds with 60% ethanol. Encapsulation of solubilized grape seed phenolics in microbeads with alginate-Ca++ or alginate-chitosan-Ca++ achieved efficiency of 78 and 92%, respectively, higher than those of pure catechin and proanthocyanidins.Encapsulated phenolics showed inhibitory activity towards the brush border enzyme α-glucosidase, which was chosen as a model bioactivity assay. Grape seed phenolics were retained in the hydrogel structure after mixing of the microbeads with bovine milk or rice drink, pasteurization of these beverages to achieve 7 decimal reductions of Mycobacterium avium subsp. paratubercolosis (equivalent to 72 °C for 91 s) as well as after intense heat treatment of the rice beverage to achieve 7 decimal reductions of Bacillus cereus (95 °C for 20 min).

Pengaruh Lama Fermentasi Terhadap Karakteristik Fermented Rice Drink Sebagai Minuman Probiotik Dengan Isolat Lactobacillus sp. F213

&#x0D; &#x0D; &#x0D; This research aims to identify the effect of fermentation time on the characteristics of fermented rice drinks and to identify the proper fermentation time to produce fermented rice drink with the best characteristics. Fermentation of fermented rice drink used the Lactobacillus sp. F213 isolates. This research used a randomized block design (RBD) with fermentation time as treatment, namely 18, 20, 22, 24, and 26 hours. Each treatment was repeated 3 times resulting in 15 experimental units. The data were analyzed by analysis of variance (ANOVA) and if the treatment affected the variable, then proceed with the Duncan test. The results showed that the fermentation time had a significant effect on total LAB, total sugar, total acidity, pH, and sour taste score of fermented rice drink. The 22 hours fermentation time treatment produced the best characteristics of fermented rice drink, with the following criteria: total LAB 13,26 Log CFU/ml, total sugar 22, 35 %, total acidity 1,71 %, pH 3,99, the color and taste that sweet and rather sour were preferred, the aroma was rather preferred, and overall acceptance was preferred.&#x0D; Keywords: probiotic, fermented rice drink, Lactobacillus sp. F213.&#x0D; &#x0D; &#x0D;