1,721,163 research outputs found

    Novel extration techniques of resverattrol from biowaste

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    The research was partially supported by Russian Science Foundation, grant № 20-66-47017 and by RFBR grant 18-29-12129mk

    Оценка природных глубоких эвтетических растворителей для экстракции изофлавоноидов из соевой мелассы

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    В данной работе были исследованы эффективность экстракции изофлавоноидов из соевой мелассы при использовании разных компонентов NADES, содержание воды в NADES, соотношение соевой мелассы и NADES, время и температура экстракции.Работа выполнена при поддержке гранта РНФ 20-66-47017

    An eco-friendly approach to enhance the extraction and recovery efficiency of isoflavones from kudzu roots and soy molasses wastes using ultrasound-assisted extraction with natural deep eutectic solvents (NADES)

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    The extraction efficiency, recovery, quantification, and stability of isoflavones (daidzein, genistein and puerarin) from the wastes /by-products of kudzu roots and soy molasses were evaluated by using natural deep eutectic solvents (NADESs) coupled with ultrasound-assisted extraction. The NADES extraction was compared with the conventional Soxhlet extraction technique, and the extracted isoflavones were quantified using HPLC-UV/Vis. Results showed extractability of puerarin to be significantly increased (p < 0.0001) in proportion to the increased water concentration of NADES (9.7 ± 0.2, 12.6 ± 0.2, and 14.8 ± 0.3 mg/g in NADESs containing 10%, 20%, and 30% water, respectively). Despite having less isoflavone content, kudzu roots and soy molasses extracts obtained using NADES exhibited higher antioxidant activity when compared with methanolic extracts. Further, NADES extracts also markedly reduced the degradation degree of isoflavones. The results of this investigation support the use of green extraction techniques to obtain value-added components like isoflavones from wastes/by-products like that of kudzu roots and soy molasses, which are envisaged to find future potential applications in the food and pharmaceutical industries. © 2022 Elsevier B.V.Russian Science Foundation, RSF: 20–66-47017This work was supported by the Russian Science Foundation RSF (Grant agreement number 20–66-47017 ).The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Elena G. Kovaleva reports financial support was provided by Russian Science Foundation RSF (Grant agreement number 20–66–47017)
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