Malting of preharvest sprouted wheat

Carvalho, Paulo de Tarso Camillo de; Beléia, Adelaide Del Pino

doi:10.5935/1806-6690.20190067

Revista Ciência Agronômica

2019

DOI: 10.5935/1806-6690.20190067

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Malting of preharvest sprouted wheat

Paulo de Tarso Camillo de Carvalho¹,

Adelaide Del Pino Beléia²

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“…However, the utilization of plantderived proteases for hydrolyzing soybean meal has rarely been reported. Wheat malt is a natural source of complex enzymes, and wheat can synthesize a large amount of endopeptidase during germination by hormone action, which makes the storage protein in wheat extensively degraded (21).…”

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Degradation of soybean meal proteins by wheat malt endopeptidase and the antioxidant capacity of the enzymolytic products

Fan

Gao²,

Zhan³

et al. 2023

Front. Nutr.

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This study investigated the hydrolysis effect of the endopeptidase from wheat malt on the soybean meal proteins. The results indicated that the endopeptidase broke the peptide bonds of soybean meal proteins and converted the alcohol- and alkali-soluble proteins into water-soluble and salt-soluble proteins. In addition, wheat malt endopeptidase did not break the disulfide bonds between proteins but affected the conformation of disulfide bonds between substrate protein molecules, which were changed from the gauche-gauche-trans (g-g-t) vibrational mode to the trans-gauche-trans (t-g-t) vibrational mode. Wheat malt endopeptidase exhibited the highest enzymatic activity at 2 h of enzymatic digestion, demonstrating the fastest hydrolytic rate of soybean meal proteins. Compared with the samples before enzymatic hydrolysis, the total alcohol- and alkali-soluble proteins were decreased by 11.89% but the water- and salt-soluble proteins were increased by 11.99%, indicating the hydrolytic effect of endopeptidase. The corresponding water-soluble proteins had molecular weights of 66.4–97.2, 29–44.3, and 20.1 kDa, while the salt-soluble proteins had molecular weights of 44.3–66.4, 29–44.3, and 20.1 kDa, respectively. The degree of enzymatic hydrolysis of soybean meal reached the maximum at 8 h. The newly created proteins exhibited significantly antioxidant properties, which were inversely related to the molecular weight. Proteins with molecular weight <3 kDa had the highest antioxidant performance with an antioxidant capacity of 1.72 ± 0.03 mM, hydroxyl radical scavenging rate of 98.04%, and ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] radical scavenging capacity of 0.44 ± 0.04 mM.

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confidence: 99%

Degradation of soybean meal proteins by wheat malt endopeptidase and the antioxidant capacity of the enzymolytic products

Fan

Gao²,

Zhan³

et al. 2023

Front. Nutr.

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Potential of bread wheat (Triticum aestivum) affected by the yellow-berry physiological disorder for the production of brewing malts

Padilla-Torres

Heredia‐Olea

Serna‐Saldívar

et al. 2022

Journal of Cereal Science

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Malting of preharvest sprouted wheat

Cited by 2 publications

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Degradation of soybean meal proteins by wheat malt endopeptidase and the antioxidant capacity of the enzymolytic products

Degradation of soybean meal proteins by wheat malt endopeptidase and the antioxidant capacity of the enzymolytic products

Potential of bread wheat (Triticum aestivum) affected by the yellow-berry physiological disorder for the production of brewing malts

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