| Literature DB >> 27719899 |
Furong Hou1, Wenhui Ding2, Wenjuan Qu1, Ayobami Olayemi Oladejo3, Feng Xiong1, Weiwei Zhang1, Ronghai He4, Haile Ma1.
Abstract
This study evaluated the nutrient property and safety of the rice residue protein isolates (RRPI) product (extracted by different alkali concentrations) by exploring the protein functional, structural properties and lysinoalanine (LAL) formation. The results showed that with the rising of alkali concentration from 0.03M to 0.15M, the solubility, emulsifying and foaming properties of RRPI increased at first and then descended. When the alkali concentration was greater than 0.03M, the RRPI surface hydrophobicity decreased and the content of thiol and disulfide bond, Lys and Cys significantly reduced. By the analysis of HPLC, the content of LAL rose up from 276.08 to 15,198.07mg/kg and decreased to 1340.98mg/kg crude protein when the alkali concentration increased from 0.03 to 0.09M and until to 0.15M. These results indicated that RRPI alkaline extraction concentration above 0.03M may cause severe nutrient or safety problems of protein.Entities:
Keywords: Alkaline extraction; Functional and structural properties; Lysinoalanine; RRPI
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Year: 2016 PMID： 27719899 DOI： 10.1016/j.foodchem.2016.09.064
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514