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Effect of dehydration on phenolic compounds and antioxidant activity of blackcurrant (Ribes nigrum L.) pomace
This study examined the effect of dehydration on the phenolic compounds and antioxidant activity of blackcurrant (Ribes nigrum L.) pomaces (DBP) subjected to hot air oven drying (HOD), industrial rotary drying (IRD) and freeze drying (FD). Temperature and residence time were evaluated for HOD, whereas air-on and air-off temperature, ratio of drum rotor speed to air speed and particle size were evaluated for IRD. The highest total anthocyanins (ATC) and flavonols (FLV) were obtained in particle size of > 5.0 mm using IRD at 475°C/97°C (air-on/air-off) and higher ratio of drum rotor speed to air speed. Smaller size particles were found susceptible to degradation due to high temperature and retention time applied in IRD, resulting in loss of phenolic compounds in DBP, thus HOD was deemed more suitable. Overall, drying method selection and parameters of operation are key in preserving the concentrations of individual HCA and FLV in DBP
Quantificação de fenóis totais presentes nas cascas de Trichillia catigua A. Juss (Meliaceae)
Efeito fungitóxico do óleo essencial de aroeira da praia (Schinus terebinthifolius RADDI) sobre Colletotrichum gloeosporioides
Preparo e caracterização de tinturas das folhas de chá verde [Camellia sinensis (L.) O. Kuntze] Theaceae
Potencial fitotóxico de extratos foliares de Aloe arborescens Miller (Asphodelaceae) produzidos em diferentes épocas do ano
Flavonoids of polygonum senegalense (MEISN) part II: More surface and internal tissue flavonoid aglycones
BuII. Chem. Soc. Ethiop. 1992, 6(2) 119-122
Flavonoids of polygonum senegalense (MEISN) part II: More surface and internal tissue flavonoid aglycones
BuII. Chem. Soc. Ethiop. 1992, 6(2) 119-122
Unusually low incidence of debarking by forest elephants in the Réserve de Faune du Petit Loango, Gabon
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