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Slow digestion starch (SDS) and resistant starch (RS) are usually used as additives or raw materials in food processing due to their low glycemic index (GI) and low digestibility, imbuing products with physiological function, such as hypoglycemic activity and anti-obesity. But due to the lack of standardization of experimental methods, great differences have been reported in the results of various studies, which mean that the reference of experimental consequences is decreased, and the development of starch processing technology is then hindered. Moreover, the detailed structural changes in starch during different types of modifications are of necessity to be explored. In this paper, the structural characteristics and physiological functions of functional starch (SDS and RS) were reviewed, the physical, enzymatic, chemical and physicochemical preparation methods of functional starch from different plant sources were compared as well. In addition, the applications of functional starch in food industry were summarized, which were expected to provide the references for optimizing starch modification efficiency and functional food development. [ABSTRACT FROM AUTHOR]

BACKGROUND: The traditional screening method for umami peptide, extracted from porcine bone, was labor‐intensive and time‐consuming. In this study, the rapid screening method and molecular mechanism of umami peptide was investigated. RESULTS: This article showed that a more precisely rapid screening method with composite machine learning and molecular docking was used to screen the potential umami peptide from porcine bone. As reference, 24 reported umami peptides were predicated by composite machine learning, with the accuracy of 86.7%. In this study, potential umami peptide sequences from porcine bone were screened by UMPred‐FRL, Umami‐MRNN Demo, and molecular docking was used to provide further screening. Finally, nine peptides were screened and verified as umami peptides by this method: LREY, HEAL, LAKVH, FQKVVA, HVKELE, AEVKKAP, EAVEKPQS, KALSEEL and KKMFETES. The hydrogen bonding was deemed to be the main interaction force with receptor T1R3, and domain binding sites were Ser146, His121 and Glu277. The result demonstrated the feasibility of machine learning assisted T1R1/T1R3 receptor for rapid screening umami peptides. The screening method would not only adapt to screen umami peptides from porcine bone but possibly applied for other sources. It also provided a reference for rapid screening of umami peptides. CONCLUSION: The manuscript lays a rapid screening method in screening umami peptide, and nine umami peptides from porcine bone were screened and identified. © 2022 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]

Background: To improve the quality of red starter wine, this study explored the effects of baking red kojic rice at varying temperatures on the physicochemical characteristics of red starter wine. Baking was predicated on understanding crucial enzyme activities and starch granule structure of red kojic rice at 75, 95, and 105 °C, leading to the production of three red starter wine variants (BHQW1, BHQW2, and BHQW3)., Results: The results revealed an increased alcohol (increase 0.50%), total sugar (increase 0.14 g L -1 ), and total acid (increase 0.54 g L -1 ) content in red starter wine fermented using baked red kojic rice compared with the control group (wine fermented with unbaked rice, HQW). Furthermore, both the 105 °C baked red kojic rice and its resulting BHQW3 demonstrated significantly higher red color values than HQW (increase 2.03 U g -1 and 0.15 U mL -1 respectively). The highest lovastatin content was presented in red kojic rice baked at 105 °C and its corresponding fermented wine (1420.63 ± 507.9 μg g -1 and 3368.87 ± 228.16 μg L -1 respectively). Additionally, BHQW groups displayed higher total flavonoids and phenols content than HQW. Regarding antioxidant capacity, all BHQW groups showed stronger overall antioxidant capacity than HQW. The determination of volatile components revealed the highest content of volatile compounds in BHQW2 (2621.19 ± 548.24 μg L -1 ) and significantly higher volatile esters in BHQW1 (254.46 ± 16.63 μg L -1 ). Moreover, 16 volatile compounds were identified only in BHQW groups, including isoamyl caprylate, 2-ethylhexyl alcohol, and benzaldehyde., Conclusion: Our findings suggested that the baking technique of red kojic rice could enhance the quality of red starter wine through enhancing antioxidant properties, increasing functional components, and enriching volatile flavor compounds, thus providing a foundation for new techniques in red starter wine production. © 2023 Society of Chemical Industry., (© 2023 Society of Chemical Industry.)

This work proposes a novel method for whole soybean flour tofu preparation by combining calcium sulfate (CS) and glucose-delta-lactone (GDL) coagulation. Importantly, the characteristics of the synthesized gel and the quality were studied. MRI and SEM results showed that the whole soybean flour tofu possessed satisfactory water holding capacity and water content at a CS to GDL ratio of 3:2, significantly improving the cross-linking network gel in tofu and accounting for its similar color to soybeans. Furthermore, GC-IMS analysis showed that the whole soybean flour tofu prepared at a 3:2 ratio had more flavor components (51 types) than commercially available ones (CS or GDL tofu) and exhibited satisfactory results during consumer sensory evaluation. Overall, this method is effective and applicable for the industrial preparation of whole soybean flour tofu., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2022 Published by Elsevier Ltd.)