Efects of some drying methods on the content in bioactive compounds in sea buckthorn by-products
2023
Stanciu, Ioana | Geicu-Cristea, Mihaela | Popa, Elisabeta Elena | Popescu, Paul Alexandru | Drãghici, Mihaela | Mitelut, Amalia Carmen | Popa, Mona Elena
Recent research has shown that the consumption of sea buckthorn (Hippophae rhamnoides) berries has many benefits for human health. Large amount of waste which result from sea buckthorn berries processing, yet containing significant quantities of bioactive substances, is being the subject of numerous latest research studies. Sea buckthorn by-products represent a valuable source of bioactive compounds that could be used for their favorable nutritional and functional properties in the pharmaceutical, cosmetic and food industries. The aim of this work is to establish a method for drying process of sea buckthorn by-products in order to obtain a powder from dry sea buckthorn waste with minimum loss of the bioactive substances. For this purpose, sea buckthorn by-product (peel and seeds) was dried at different temperatures (30˚C, 40˚C, 50˚C and 60˚C) by conventional hot air drying versus lyophilization method and then the antioxidant activity (DPPH), the content of total polyphenols and ascorbic acid content were determined
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