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|Title:||Dispersion‐assisted extraction of guarana processing wastes on the obtaining of polyphenols and alkaloids|
|Author:||Santana, Ádina L.|
Zanini, Júlia A.
Macedo, Gabriela A.
|Abstract:||This is the first work to evaluate the effects of high shear mixing (HSM) on the recovery of valuable polar compounds from guarana processing wastes (peels and depleted seeds), which results may server to support researches on the valorization of guarana. Under the optimum condition, the HSM was led to extract catechin (11.11–42.93 g/100 g raw material), epicatechin (7.83–24.78 g/100 g raw material) and caffeine (9.99–28.80 g/100 g raw material) from guarana products, which contents were comparable with those obtained with ultrasound assisted extraction and maceration, and significantly higher than those obtained with infusion and decoction. Besides the relatively low reducing sugar content (0.02–0.23 g glucose equivalent/100 g raw material), HSM extracts also presented high antioxidant capacity (25–533 mg ascorbic acid equivalent/g raw material) and phenolic compounds (0.5–45 g catechin equivalent/100 g raw material and 0.1–66.38 g gallic acid equivalent/100 g raw material). The use of pectinase enhanced the HSM to recover target compounds in depleted seeds|
|Appears in Collections:||FEA - Artigos e Outros Documentos|
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