Microbial decontamination of peeled chestnuts by electrolyzed water and its effect on biochemical and sensory properties

The aim of this study was to improve the hygienic quality of peeled chestnuts by electrolyzed water (EW) treatment. Additionally, the effect of the treatment on biochemical and organoleptic properties of chestnuts was assessed. The counts of mesophilic aerobic bacteria (MAB) and yeasts and mold in peeled chestnuts were found to be 8.01 and 7.96 log CFU/g, respectively. Electrolyzed water was produced at four different combinations of brine and deionized water (A, B, C and D; with chlorine levels of 230, 470, 250 and 490 mg/L, respectively). Following treatment for 10 min using EW generated at the combination B (EW-B), the counts of MAB and yeasts and mold in peeled chestnuts were reduced by 1.61 and 1.65 log CFU/g, respectively, compared with distilled water treatment. Although EW-D possessed relatively high chlorine levels, its inactivation effect was found to be reduced after 5 min of treatment. Soluble solids and total phenolic content (TPC) of peeled chestnuts were decreased significantly (p < 0.05) with increasing EW treatment time. However, 2, 2-diphenyl-1-picrylhydrazyl free radical scavenging activity and sensory qualities were insignificantly altered by EW treatment. In conclusion, EW, especially EW-B, can potentially be used to reduce microbial load in peeled chestnuts with no or only minor negative effects on their biochemical and sensory qualities

Biotechnological potentialities and valorization of mango peel waste: a review

In recent years, by-products of fruit processing have received a great deal of attention, which is primarily due to their nutritional and economic exploitation through utilization of emerging technologies. Mango peel waste, a by-product from pulp processing units, is an important source of high quality antioxidant dietary fibre, pectin, polyphenols and carotenoids. It also possess significant biotechnological potential since it has been found suitable for several bioprocesses including ethanol, biogas, lactic acid, enzymes and single cell production. Valorization of mango peel through different routes not only can increase the profitability of fruit processing industries, but also help reduce environmental pollution. This review intends to provide a broad view on available technologies for mango peel waste utilization, with an emphasis on its biotechnological conversion into added value products beside other ways of utilization

Preparation of very high gravity cassava mashes and subsequent fermentation to ethanol using Saccharomyces bayanus

Abstract Fuel ethanol was produced from very high gravity (VHG

Sustainable Methods for Decontamination of Microcystin in Water Using Cold Plasma and UV with Reusable TiO2 Nanoparticle Coating

Microcystins (MCs) are a family of cyanotoxins and pose detrimental effects on human, animal, and ecological health. Conventional water treatment processes have limited success in removing MCs without producing harmful byproducts. Therefore, there is an urgent need for cost-effective and environmentally-friendly methods for treating MCs. The objective of this study was to develop sustainable and non-chemical-based methods for controlling MCs, such as using cold plasma and ultra violet (UV) light with titanium dioxide (TiO2) coating, which can be applied for diverse scale and settings. MCs, extracted from Microcystis aeruginosa, were treated with cold plasma or UV at irradiance of 1470 μW/cm2 (high) or 180 μW/cm2 (low). To assess synergistic effects, the outside of the UV treatment chamber was coated with nanoparticles (TiO2) prior to irradiation, which can be reused for a long time. The degradation efficiency of UV was enhanced by the reusable TiO2 coating at lower irradiance (70.41% [UV] vs. 79.61% [UV+TiO2], 120 min), but no significant difference was observed at higher irradiance. Cold plasma removed MCs rapidly under experimental conditions (92%, 120 min), indicating that it is a promising candidate for controlling MCs in water without generating harmful disinfection byproducts. It can be also easily and practically used in household settings during emergency situations

Biotechnological Potentialities and Valorization of Mango Peel Waste: A Review

ABSTRACT In recent years, by-products of fruit processing have received a great deal of attention, which is primarily due to their nutritional and economic exploitatio