Extraction optimization and characterization of persimmon peel pectin extracted by subcritical water

Autor: Yanlong Cui, Shuang Wang, Shuxuan Wang, Siyue Cao, Xin Wang, Xin Lü
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Food Chemistry: X, Vol 16, Iss , Pp 100486- (2022)
Druh dokumentu: article
ISSN: 2590-1575
DOI: 10.1016/j.fochx.2022.100486
Popis: Persimmon peel pectin (PPP) was extracted by subcritical water via the response surface methodology. The optimal crude PPP extraction yield of 7.62 ± 0.7 % was found at 138 °C, 2.84 min, and liquid–solid ratio of 1:10.02. After treatment of deproteinization and decolorization with papain and hydrogen peroxide, 83.19 % of protein and 78.56 % of the colour in crude PPP were removed, respectively. PPP owned the Mw of 21.79 kDa and its uronic acids content was 64.03 %. PPP was further affirmed by fourier transform infrared, X-ray diffractometer and 1H NMR analysis. Moreover, the degradation temperature (228.05 ℃) of PPP was verified via differential scanning calorimetry. Then, the IC50 of PPP to ABTS·+ was 9.8 times that of commercial citrus pectin. Moreover, PPP could change microbial communities and selectively enrich Bacteroides, Cetobacterium, Erysipelatoclostridium, Parabacteroides and Phocaeicola sartorii. This study demonstrated that subcritical water was practicable for extraction of persimmon peel pectin.
Databáze: Directory of Open Access Journals