Journal
CARBOHYDRATE POLYMERS
Volume 292, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2022.119612
Keywords
Starch structure; 1; 4-?-Glucan branching enzyme; Rice noodle; Rehydration; Texture quality
Categories
Funding
- National Natural Science Foundation of China [31722040, 31771935]
- National First-class Discipline Program of Food Science and Technology [JUFSTR20180204]
- China Agriculture Research System [CARS-02]
- Distinguished Professor Project of Jiangsu Province
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Modifying the branching degree of rice starch using 1,4-α-glucan branching enzyme (GBE) allows the production of high-quality instant rice noodles with improved gel structure, rehydration time, and tensile strength.
Rice noodle with excellent edible quality usually needs a dense gel network structure, but the dense structure is detrimental to the entry of water molecules during dried rice noodle rehydration. To combine the conflict requirements, we described the branching modification of rice starch using 1,4- alpha- glucan branching enzyme (GBE). Highly branched starch with a short cluster structure reduced fractal dimension and crystallite thickness while increasing mesh size and hydrophilicity of rice noodle gel network. Rice noodles derived from rice soaked with 128 U/g of GBE had a desirable rehydration time (370 s), which was reduced by 39.84% compared to the control. Meanwhile, the shorter double helix formed by the short cluster contributed to the improved short-range order, resulting in GBE-modified rice noodles with significantly higher tensile strength than control. These findings demonstrate that manipulating the branching degree of starch is an effective method for producing high-quality instant rice noodles.
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