著者

Kyoka Hasegawa Kentaro Matsumiya Hiroki Saeki Yasuki Matsumura Kimio Nishimura

出版者

Japanese Society for Food Science and Technology

雑誌

Food Science and Technology Research (ISSN:13446606)

巻号頁・発行日

pp.FSTR-D-22-00169, (Released:2022-11-21)

被引用文献数

1

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The optimal preparatory conditions identified using random-centroid optimization revealed that the maximum hydroxyl radical antioxidant activity (63.4 ± 4.8 μmol of gallic acid equivalent/g of protein) was achieved at 70 °C; relative humidity, 45%; reaction time, 47.92 h; and glucose to soybean 11S globulin ratio, 10.66:1 (w/w). The average particle size of the oil-in-water emulsions prepared using optimally glycated, unreacted, and native soybean 11S globulin was 1.68 ± 0.11, 1.81 ± 0.18, and 2.36 ± 0.42 μm, respectively. The emulsion stability of the optimally glycated and unreacted soybean 11S globulin was superior to that of native soybean and did not exhibit complete separation after four weeks. When a sufficient amount of optimally glycated soybean 11S globulin was present in the emulsion, oil oxidation was significantly suppressed, suggesting the potential use of optimally glycated soybean 11S globulin as an antioxidant.

著者

Momoka Suzuki Kentaro Matsumiya Hiroki Saeki Yasuki Matsumura Kimio Nishimura

出版者

Japanese Society for Food Science and Technology

雑誌

Food Science and Technology Research (ISSN:13446606)

巻号頁・発行日

pp.FSTR-D-22-00062, (Released:2022-09-30)

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The superoxide anion radical scavenging activities of glucose-conjugated chicken myofibrillar proteins (Mfs), which were soluble in low-ionic-strength medium and exhibited maximum antioxidant capacity, and maltotriose-conjugated chicken Mfs, which were maximally soluble in low-ionic-strength medium, were 264 ± 45 (n = 3) and 740 ± 346 units of superoxide dismutase/g of protein (n = 4), respectively. The droplet diameters of the highest peak of o/w emulsions prepared using each conjugate as emulsifier were 8.1 ± 1.3 (n = 3) and 4.7 ± 1.9 μm (n = 3), respectively, a significant difference at p < 0.05. The emulsions prepared with glucose- and maltotriose-conjugated chicken Mfs did not show strong stability. Maltotriose-conjugate was added to an emulsion containing methyl linoleate and Tween 20 at a concentration of 0.3 % and stored at 50 °C for 7 days, resulting in significantly suppressed oil oxidation at day 5 only (p < 0.05). These results indicate that the conjugate can act as an antioxidant to inhibit oil oxidation.