Potato Peel Research Articles

Fabrication of PVA-Based Flexible Shielding Composite Incorporating Areca Microfiber, Cobalt, and Activated Biochar Derived from Potato Peel

Fabrication of PVA-Based Flexible Shielding Composite Incorporating Areca Microfiber, Cobalt, and Activated Biochar Derived from Potato Peel

Production and optimization of surfactin produced from locally isolated Bacillus halotolerans grown on agro-industrial wastes and its antimicrobial efficiency

IntroductionOptimal exploitation of the huge amounts of agro-industrial residuals that are produced annually, which endangers the ecosystem and ultimately contributes to climate change, is one of the solutions available to produce value-added compounds.Aim and objectivesThis study aimed at the economic production and optimization of surfactin. Therefore, the production was carried out by the microbial conversion of Potato Peel Waste (PPW) and Frying Oil Waste (FOW) utilizing locally isolated Bacillus halotolerans. Also, investigating its potential application as an antimicrobial agent towards some pathogenic strains.ResultsScreening the bacterial isolates for surfactin production revealed that the strain with the highest yield (49 g/100 g substrate) and efficient oil displacement activity was genetically identified as B. halotolerans. The production process was then optimized utilizing Central Composite Design (CCD) resulting in the amelioration of yield by 11.4% (from 49 to 55.3 g/100 g substrate) and surface tension (ST) by 8.3% (from 36 to 33 mN/m) with a constant level of the critical micelle concentration (CMC) at 125 mg/L. Moreover, the physiochemical characterization studies of the produced surfactin by FTIR, 1H NMR, and LC–MS/MS proved the existence of a cyclic lipopeptide (surfactin). The investigations further showed a strong emulsification affinity for soybean and motor oil (E24 = 50%), as well as the ability to maintain the emulsion stable over a wide pH (4–10) and temperature (10–100 °C) range. Interestingly, surfactin had a broad-spectrum range of inhibition activity against Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeruginosa, klebsiella pneumonia, and Candida albicans.ConclusionSubsequently, the screening of the isolates and the utilized food-processing wastes along with the extraction technique resulted in a high yield of surfactin characterized by acceptable ST and CMC levels. However, optimization of the cultural conditions to improve the activity and productivity was achieved using Factor-At-A-Time (OFAT) and Central Composite Design (CCD). In contrast, surface activity recorded a maximum level of (33 mN/n) and productivity of 55.3 g/100 g substrate. The optimized surfactin had also the ability to maintain the stability of emulsions over a wide range of pH and temperature. Otherwise, the obtained results proved the promising efficiency of the surfactin against bacterial and fungal pathogens.

Investigation and characterization of changes in potato peels by thermochemical acidic pre-treatment for extraction of various compounds

Potato peel waste (PPW) is an underutilized substrate which is produced in huge amounts by food processing industries. Using PPW a feedstock for production of useful compounds can overcome the problem of waste management as well as cost-effective. In present study, potential of PPW was investigated using chemical and thermochemical treatment processes. Three independent variables i.e., PPW concentration, dilute sulphuric acid concentration and liberation time were selected to optimize the production of fermentable sugars (TS and RS) and phenolic compounds (TP). These three process variables were selected in the range of 5–15 g w/v substrate, 0.8–1.2 v/v acid conc. and 4–6 h. Whole treatment process was optimized by using box-behnken design (BBD) of response surface methodology (RSM). Highest yield of total and reducing sugars and total phenolic compounds obtained after chemical treatment was 188.00, 144.42 and 43.68 mg/gds, respectively. The maximum yield of fermentable sugars attained by acid plus steam treatment were 720.00 and 660.62 mg/gds of TS and RS, respectively w.r.t 5% substrate conc. in 0.8% acid with residence time of 6 h. Results recorded that acid assisted autoclaved treatment could be an effective process for PPW deconstruction. Characterization of substrate before and after treatment was checked by SEM and FTIR. Spectras and micrographs confirmed the topographical variations in treated substrate. The present study was aimed to utilize biowaste and to determine cost-effective conditions for degradation of PWW into value added compounds.

In vitro antifungal activities of dose-dependent bioactive compound from potato peels to combat powdery mildew disease in cucumber

The search for biopolymer-based materials to replace dangerous chemicals in agriculture has become increasingly important in recent years for sustainable crop development. In our study enzymatic synthesis of isomaltose was done using potato peels. Isomaltose solvent extracts were tested for their ability to inhibit fungal pathogens like Erysiphe cichoracearum and Fusarium oxysporum. Among those tested, a dosedependent isomaltose extract exhibited significant inhibition on E. cichoracearum and F. oxysporum pathogen conidial sporulation, number of conidia and their motility. Under the in vitro studies, with isomaltose extract at (2.5 mg mL ) recorded a maximum conidial inhibition of 86.2, ?1 E. cichoracearum average number of conidia 4-27 and 5 per cent motility. While, sterile distilled water and DMSO showed maximum growth of the both the pathogens and also their motility was 92-97 per cent, respectively. Similarly, F. oxysporum maximum conidial inhibition of 88.3 and average conidia of 9-30 with motility of 7 per cent was observed after treating with 2.5 mg mL isomaltose. Moreover, isomaltose a biopolymer ?1 derived from potato peel was used in different concentrations as priming agent to cucumber seeds and were evaluated for its effectiveness to enhance plant growth parameters. Among the treatments, seeds-primed with 2.5 mg mL of isomaltose extracts in water exhibited early seedling germination of 96.8 per cent and ?1 vigor of 2210.3 and also cucumber seeds treated with 2.5 mg mL of isomaltose extracts in DMSO showed ?1 significant germination rate of 95.5 per cent and vigor index of 1987.7. Overall, these results determine that the antifungal property of water dissolved isomaltose is highly significant in exhibiting remarkable inhibitory action against Fusarium and powdery mildew phytopathogens, further the dose-dependent concentration of water dissolved isomaltose showed fair to good enhancement of seed germination which will lead to establishing a novel bio-waste agricultural formulation for the management of plant pathogens and in particular Fusarium and powdery mildew disease of cucumber and other cucurbitaceous crops.. KEYWORDS :Bio-polymer, optimize, pathogen inhibition, plant growth, seed treatment

Degradation of chemical oxygen demand, suspended solids and ammoniacal nitrogen from sewage by sweet potato peel coagulant under the influence of pH

Degradation of chemical oxygen demand, suspended solids and ammoniacal nitrogen from sewage by sweet potato peel coagulant under the influence of pH

Effect of drying and milling industrial potato peel for recovering phenolic and antioxidant compounds: Optimization process and economic evaluation

Currently, industrial potato peel (PP) represents a cost to the industry and a potential burden on the environment. This study aims to discuss the need to dry and mill PP before extracting phenolic and antioxidant compounds, aiming to achieve the most profitable strategy to valorize the residue without introducing irrelevant and expensive processes. A design of experiments and a simplified economic evaluation were used to compare the two scenarios: PP without pre-treatment and after drying and milling (PPt). A central composite design with two factors (ethanol concentration and solid/liquid ratio) was performed aiming to maximize two response variables (concentration of phenolic compounds in the extract and antioxidant activity). A maximum of 46.9 ± 2.6 mg GAE/g dry extract and an IC50 of 900 mg/L was achieved by extracting PPt with 50 % ethanol. For PP extraction, only ethanol concentration was revealed to be important, achieving an extract with 22.8 ± 0.8 mg GAE/g dry extract and an IC50 of 900 mg/L with 60 % ethanol. The economic analysis showed that the reduced extraction yield and the increment in ethanol used for extracting potato peel without pre-treatment significantly affected the operating costs. A more economic scenario is achieved by drying and milling PP.

Amylase and Cellulase Production from Newly Isolated Bacillus subtilis Using Acid Treated Potato Peel Waste.

Species belonging to the genus Bacillus produce many advantageous extracellular enzymes that have tremendous applications on a commercial scale for the textile, detergent, feed, food, and beverage industries. This study aimed to isolate potent thermo-tolerant amylolytic and cellulolytic bacterium from the local environment. Using the Box-Behnken design of response surface methodology, we further optimized the amylase and cellulase activity. The isolate was identified by 16S rRNA gene sequencing as Bacillus subtilis QY4. This study utilized potato peel waste (PPW) as the biomaterial, which is excessively being dumped in an open environment. Nutritional status of the dried PPW was determined by proximate analysis. All experimental runs were carried out in 250 mL Erlenmeyer flasks containing acid treated PPW as a substrate by the thermos-tolerant Bacillus subtilis QY4 incubated at 37 °C for 72 h of submerged fermentation. Results revealed that the dilute H2SO4 assisted autoclaved treatment favored more amylase production (0.601 IU/mL/min) compared to the acid treatment whereas high cellulase production (1.269 IU/mL/min) was observed in the dilute acid treatment and was found to be very effective compared to the acid assisted autoclaved treatment. The p-value, F-value, and coefficient of determination proved the significance of the model. These results suggest that PPW could be sustainably used to produce enzymes, which offer tremendous applications in various industrial arrays, particularly in biofuel production.

Fungal co-culture enabled co-fermentation of food waste for production of endoglucanase enzyme

The primary scenarios of biochemical industries include diverse applications with high demand and the costly manufacturing of microbial cellulolytic enzymes. Using these enzymes to turn cellulosic waste into fuel is one of the prime applications of these enzymes to produce green fuel. Nevertheless, low production and weak functional abilities make these enzymes expensive and technically non-viable. This study presents multifactor bioprocess approaches to enhance cellulolytic enzyme production and efficiency using a low-cost strategy. Co-fermentation of pea pods (PPs) and potato peel (PP) wastes as food wastes has been conducted for solid-state fermentation (SSF) using fungal strain-based co-culture. To set the SSF, the nutrient medium and moisture balance of SSF have been maintained using an extract of PPs and PP waste, which are found to be rich in sugar and starch composition. Starch may function as a natural inducer in the SSF process to alleviate enzyme production in the presence of sugar composition. At 37 oC and pH 5.0, a maximum of 2.4 U/mL FPA (filter paper activity) has been produced at a substrate ratio of 4:04 (PPs:PP) using 50% of the moisture content on day 5 of the harvesting period. Additionally, 24.7 IU/mL of CMCase (carboxymethyl cellulase) in day 8 and 18.8 IU/mL of BGL (β-Glucosidase) in day 7 have been obtained. A temperature of 37 oC was found to be optimal, while a pH range of 5.0–9.0 was noticed to be optimal for maximum CMCase activity. Thus, the study may provide a sustainable approach to valorizing domestic solid food waste for the economic production of hydrolytic enzymes.

Novel Synthesis of Bionanomaterials by Conversion of Potato Peels and Adsorption Studies of Ni on Prepared Surface

Novel Synthesis of Bionanomaterials by Conversion of Potato Peels and Adsorption Studies of Ni on Prepared Surface

Degradation of potato peels using amylase- and pectinase-producing fungal strain in an electrochemical cell and by-product analysis

ABSTRACT Degradation of the waste using amylase- and pectinase-producing fungal strains in Microbial fuel cells (MFC) can be a sustainable and economic strategy for solid waste management. An isolate of the fungal strain Aspergillus niger, which showed amylase and pectinase activities was implemented for potato peel waste degradation. MFC was constructed and the highest OCV was observed using KMnO4 in catholyte (1586 ± 63 mV/m3) with anode graphite electrode-coated MWCNT. MFC in fed-batch mode was also performed by adding 10% of the sample every 24 h, and an improved result was obtained. The power density observed with 100-ohm and 1000-ohm external resistors was 119 ± 7 W/m3 and 42 ± 9 W/m3, respectively. From MFC operation at an optimised condition removal rate of COD, ammoniacal-nitrogen, reducing sugar and TSS were 37.69%, 67.72%, 72.64%, and 65.95% respectively. Sugar and byproduct analysis in digested product was done by HPLC, various value-added products were generated from waste sample.

Characteristics of rice husk biochar briquettes with municipal solid waste cassava, sweet potato and matooke peelings as binders

Rice husks are not readily biodegradable making their disposal challenging due to the common disposal method of open burning which has negative environmental effects. Additionally, banana, sweet potato and cassava peelings form a large percentage of organic municipal solid waste. Therefore, this study developed rice husk biochar briquettes with organic municipal peelings waste as binders. Rice husks biochar was formed via carbonization processes in a step-down kiln at temperatures ranging between 400 and 500 °C. Organic binders were mixed with the rice husk biochar at different ratios of 10% and 15% before being compacted at a pressure ≤ 7 MPa into briquettes. Thermogravimetric results showed that the developed briquettes had high ash contents ranging from 44% to 47%. Rice husk biochar briquettes with the highest particle density were observed for briquettes with 15% cassava peel binder at 427.1 kg/m3. The highest HHV and maximum attainable flame temperature of 21.75 MJ/kg and 828.7 °C were obtained for rice husk biochar briquettes with 15% matooke peeling organic binder. For all rice husk biochar briquettes, increasing the organic peeling binder had a positive impact of reducing the ash content, while at the same time increasing the peak temperatures, thus contributing to their enhanced thermal stability.

Biogenic synthesis of silver nanoparticles from Solanum tuberosum peel and their potent antibacterial action

The utilisation of peel extracts for the biogenic synthesis of nanoparticles has garnered attention because of their economical and environmentally friendly attributes, along with their potential for large-scale production. Among the metallic nanoparticles, silver is highly efficient against various pathogens, biocompatible and easy to incorporate into medicinal applications. This investigation focuses on the use of Solanum tuberosum peel extract (commonly known as potato peel), for formation of silver nanoparticles. UV–visible spectrometry revealed a distinctive AgNP peak at 471 nm, while XRD analysis confirmed the crystalline nature of nanosilver, featuring an average crystallite size of 13.65 nm. Additionally, FESEM imaging revealed a nearly spherical surface morphology of the AgNPs, with notable clusters. Significant FTIR peaks indicated the presence of phytoconstituents, which acted as effective reducing agents during the AgNP synthesis. To evaluate the antibacterial efficacy, the synthesised AgNPs were evaluated using the agar-well diffusion method against six bacterial strains, including both gram-positive and gram-negative strains, with concentrations of 100, 500 and 1000 µg/ml. The results were compared to streptomycin (control), which exhibited the most substantial inhibition zone at a concentration of 1000 µg/ml, for Staphylococcus aureus (8 mm), Streptococcus pneumoniae (10 mm), Streptococcus anginosus (10 mm), Bacillus subtilis (10 mm), Pseudomonas aeruginosa (12 mm) and Escherichia coli (8 mm) were observed. This study highlights an innovative approach to repurposing frequently produced biowaste (potato peel) into functional nanomaterials possessing significant antibacterial properties, thus underscoring a novel strategy for waste disposal and the environmentally responsible production of nanoparticles.

Functionalization of wheat bread with prebiotic dietary insoluble fiber from orange-fleshed sweet potato peel and haricot bean flours

The development of functional foods is leading the way toward making diets more beneficial for human health. Prebiotics are among the simplest and safest ways to address some of this issue. However, the selection of simple food systems that better convey their functional properties remains an area that needs further investigation. Thus, this study aims to contribute to the aforementioned concern by developing functional and nutritionally balanced bread. Composite flour was formulated using wheat, orange flashed sweet potato peel (OFSPP), and haricot bean flours. Proximate and β-carotene content, functional, pasting, and physical properties of composite flours, and quality parameters of the developed bread were determined and analyzed by employing appropriate methods. The functionality of the composite flours has been increased in terms of both dietary fibers (2–8.4 g/100g) and β-carotene content (ND–731μg/100g). Similarly, the protein content of the formulated flour has increased from 11.25 to 17.4 g/100g. The consumer-based sensorial investigation further revealed that the produced bread's sensory acceptability is not markedly compromised by the addition of OFSPP and haricot bean flour up to 10% and 20%, respectively. Nevertheless, animal and human gut microbiome studies are still needed in the future to further reinforce the findings of this study.

The Major Potential of Non-Conventional Feed Resources in Poultry Nutrition in Ethiopia: A Review

This review was conducted with the objective of assessing the major potential of non-conventional feed resources in poultry nutrition in Ethiopia. Ethiopia has a vast array of non-conventional feed resources that can be utilized in poultry nutrition. These resources have the potential to significantly contribute This review was conducted with the objective of assessing the major potential of non-conventional feed resources to the growth and development of the poultry industry in the country. Potentially available of non-conventional feed resources (NCFR) include plant materials, such as the leaves and seeds of Moringa, Cassava, Taro leaf, Mango seed kernels, Pigeon pea, potato peel and leaf and agro-industrial by-products like, Rice bran, Filter sugar cake and brewery grain. Most of these feedstuff materials are low in energy, protein and minerals. These feed resource contain high amounts of anti-nutritional component. Appropriate processing methods like soaking, boiling, or fermenting can help reduce these anti-nutritional factors, enhancing the digestibility and utilization of NCFR in poultry diets. There are also several challenges and limitations that need to be addressed in order to fully exploit the potential of these feed resources. Some of the common problems are like limited knowledge and awareness, lack of processing and preservation techniques, limited availability and seasonal variations, lack of infrastructure and storage facilities and limited research and data. To addressing these challenges through research, extension services, and policy support can help unlock the full potential of non-conventional feed resources in poultry nutrition in Ethiopia. This would not only contribute to improved productivity and profitability in the poultry sector but also enhance food security and sustainable agricultural practices in the country.

Bioaccessibility and bioavailability of essential and potentially toxic trace elements in potato cultivars: A comprehensive nutritional evaluation

Among the most consumed foods in the world is potato, which occupies the first place as a non-grain commodity, demonstrating the importance of its assessment concerning the population's food safety. In this study, the nutrients Ca, Mg, K, P, Cu, Mn, Fe, and Zn and the potentially toxic trace elements Cd, Cr, and Pb were evaluated considering their total contents, bioaccessible and bioavailable fractions in different potato cultivars, in an unpublished approach in the literature. The in vitro standard gastrointestinal digestion method (INFOGEST) and a model of the intestinal epithelial barrier using the Caco-2 cell line were applied for investigate the presence of metals in potato. For the macroelements, the bioaccessibility (% w/w) varied in the ranges: K (57–72 %), P (59–76 %), Mg (83–103 %), and Ca (30–123 %), whereas for the microelements were: Cu (27–74 %) and Mn (4.22–12.02, 60–119 %). The potentially of trace toxic elements, Cd and Pb, were found in 75 % of the samples, however, all the concentration values were below the maximum levels allowed of 0.10 µg/g. Chromium was determined only in potato peels and has no maximum established level. The bioaccessible and bioavailable fractions of Cd, Cr, and Pb were below the limits of quantification of the spectrometric methods (LOQ − µg/L: 0.063 Cd, 0.65 Cr, and 0.44 Pb). The potato samples were considered safe for consumption regarding the presence of potentially toxic trace elements, with a remarkable nutritional contribution.

Effective removal of Ni(II)ions from aqueous solutions using low-cost, eco-friendly natural and NaOH/CaCl2/C2H5OH-modified potato peels

Effective removal of Ni(II)ions from aqueous solutions using low-cost, eco-friendly natural and NaOH/CaCl2/C2H5OH-modified potato peels

Protective effects of microbial biosurfactants produced by Bacillus halotolerans and Candida parapsilosis on bleomycin-induced pulmonary fibrosis in mice: Impact of antioxidant, anti-inflammatory and anti-fibrotic properties via TGF-β1/Smad-3 pathway and miRNA-326

Idiopathic pulmonary fibrosis (IPF) is an irreversible disease which considered the most fatal pulmonary fibrosis. Pulmonary toxicity including IPF is the most severe adverse effect of bleomycin, the chemotherapeutic agent. Based on the fact that, exogenous surfactants could induce alveolar stabilization in many lung diseases, the aim of this study was to explore the effects of low cost biosurfactants, surfactin (SUR) and sophorolipids (SLs), against bleomycin-induced pulmonary fibrosis in mice due to their antioxidant, and anti-inflammatory properties. Surfactin and sophorolipids were produced by microbial conversion of frying oil and potato peel wastes using Bacillus halotolerans and Candida parapsilosis respectively. These biosurfactants were identified by FTIR, 1H NMR, and LC-MS/MS spectra. C57BL/6 mice were administered the produced biosurfactants daily at oral dose of 200 mg kg−1 one day after the first bleomycin dose (35 U/kg). We evaluated four study groups: Control, Bleomycin, Bleomycin+SUR, Bleomycin+SLs. After 30 days, lungs from each mouse were sampled for oxidative stress, ELISA, Western blot, histopathological, immunohistochemical analyses. Our results showed that the produced SUR and SLs reduced pulmonary oxidative stress and inflammatory response in the lungs of bleomycin induced mice as they suppressed SOD, CAT, and GST activities also reduced NF-κβ, TNF-α, and CD68 levels. Furthermore, biosurfactants suppressed the expression of TGF-β1, Smad-3, and p-JNK fibrotic signaling pathway in pulmonary tissues. Histologically, SUR and SLs protected against lung ECM deposition caused by bleomycin administration. Biosurfactants produced from microbial sources can inhibit the induced inflammatory and fibrotic responses in bleomycin-induced pulmonary fibrosis.

Edible Electronic Components Made from Recycled Food Waste

AbstractA procedure is developed for producing basic electronic components utilizing materials sourced from discarded orange, grapefruit, lemon, apple, banana, potato, and carrot peels. Initially, these materials undergo dehydration, followed by a meticulous pulverization process to obtain fine powder. Natural adhesives like water, honey, sugar, starch, and gelatin are employed to interconnect the materials. Formed substrates are characterized using Scanning Electron Microscopy, Energy Dispersive X‐ray Spectroscopy, and an optical profilometer. Furthermore, the relative permittivity of the materials is determined. Three distinct types of substrates, derived from the aforementioned peels, are crafted in varying dimensions. Substrates measuring 4 cm × 2.5 cm host interdigital capacitive sensors, whereas larger 6 cm × 3.5 cm substrates accommodate inductor‐capacitor (LC) sensors. Each of the six samples undergoes individual dry testing, while LC sensors are additionally tested with the post‐application of artificial saliva and mouthwash liquids. The sensor's characterization involves measurement of impedance and phase angle for all samples. Capacitance is additionally measured for capacitors, and inductance for LC circuits. These assessments are carried out within the frequency range spanning from 1 MHz to 400 MHz. The objective is the development of fully functional electronic components, derived from discarded edible items, fostering sustainable practices, and finding applications in biomedicine.

Development of food packaging bioplastic from potato peel starch incorporated with rice husk silica using response surface methodology comprehending central composite design

Rice husk and sweet potato peel are agricultural waste with high potential and economic interest. The utilization of these materials in product development will provide substantial improvement toward waste reduction. Therefore, this study aimed to develop a food packaging bioplastic using potato peel and rice husk. The optimization of three parameters (ratio of silica, the volume of glycerol and volume poured) was set in Design Expert Software version 13 to find the best formulation. The software set eighteen formulations to measure advanced bioplastic thickness, density, and moisture content. The optimum formulation exhibits thickness, density and moisture content with the value of 1.87 mm, 0.196 g/mL and 31.224%, respectively. In response surface methodology, bioplastic formulation was optimized using central composite design (CCD). The statistical model displayed an excellent fit with standard deviation, R2 data. The R2 for thickness was 0.8946, while 0.9516 for density and 0.96 for moisture content. These values were close to 1, indicating the significant effect on the tested conditions to get the optimum formulation.

Screw reactor design for potato peel pretreatment using the steam explosion

In this article we can observe the scanning by the literature for the pretreatment of steam explosion applied to lignocellulose biomass. A comparison of the chemical and physical characterization of potato peel as a lignocellulose biomass. Besides, the innovative design of a continuous reactor for the potato peel steam explosion process is shown, with specific temperature and pressure conditions on a pilot scale, detailing its parts. Finally, a finite element analysis was performed where stress results were obtained from the reactor material, severity factor, structural analysis and thermal analysis, providing a panorama of the reactor’s behavior with the conditions specific.