期刊
FOOD CHEMISTRY
卷 245, 期 -, 页码 1113-1123出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.11.059
关键词
Bamboo shoots; Accelerated solvent extraction; Polysaccharide; Characterization; Antioxidant activity
资金
- Fundamental Research Funds for the Central Universities [XDJK2017D131]
In this study, an efficient accelerated solvent extraction (ASE) technology was applied for rapid extraction of polysaccharides from the processing by-products of Chimonobambusa quadrangularis (CPS). The extraction yields, physicochemical characterization, and antioxidant activities of CPS obtained by ASE and hot water extraction (HWE) were further compared. A maximal ASE-CPS yield was obtained by optimized extraction conditions (temperature 126 degrees C, 2 cycles, and 22 min) using response surface methodology. The yield of polysaccharides from ASE (9.96% +/- 0.39%) was significantly higher than that from HWE (7.16% +/- 0.32%). Differences were found between ASE and HWE with the chemical composition, molecular weight distribution, rheological property, and antioxidant activities of the obtained polysaccharides, while the primary structure remained the same. ASE-CPS exhibited better chemical antioxidant activities in oxygen radical absorbance capacity (ORAC), reducing power, and DPPH and hydroxyl radical scavenging ability, whereas HWE-CPS displayed higher activity in metal chelating activity assay.
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