Structural, physicochemical and rheological properties of starches isolated from banana varieties (Musa spp.)

Autor: Min Yang, Lei Chang, Fan Jiang, Ning Zhao, Pengtao Zheng, Jonatha Simbo, Xiuzhu Yu, Shuang-kui Du
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Food Chemistry: X, Vol 16, Iss , Pp 100473- (2022)
Druh dokumentu: article
ISSN: 2590-1575
DOI: 10.1016/j.fochx.2022.100473
Popis: Banana starches were isolated from five banana varieties in Tanzania to analyze the proximate composition, structure, physicochemical and rheological properties. The amylose content of banana starches was 29.92 ± 0.17 %–39.50 ± 0.08 % and the resistant starch content of cooked banana starches ranged from 44.74 ± 1.72 % to 55.43 ± 1.52 %. Banana starch granules presented irregular shapes with particle size of 21.73 to 24.67 μm and showed B-type or C-type crystalline patterns with crystallinity of 36.69 % to 41.83 %. The solubility and the swelling power were 2.5 ± 0.42 %–4.4 ± 0.57 % and 11.27 ± 0.04 %–12.48 ± 0.71 %, respectively. Mzuzu and Malindi starches possessed lower gelatinization temperature. The high gelatinization peak viscosity (2248 ± 67–2897 ± 71 cP), low breakdown (556 ± 7–960 ± 41 cP) and low setback (583 ± 29–864 ± 118 cP) indicated banana starch could replace chemically cross-linked starch for applications that require stable viscosity. The rheological analysis showed that banana starches exhibited shear thinning behavior and had great processing adaptability. The results all above will provide basic data for the development and utilization of banana starch.
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