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Proteolytic activity, antioxidant, and α-Amylase inhibitory activity of yogurt enriched with coriander and cumin seeds
LWT - Food Science and Technology ( IF 6 ) Pub Date : 2020-08-02 , DOI: 10.1016/j.lwt.2020.109912
Amal Bakr Shori

Two types of yogurt (Y) were prepared in the presence of coriander (CO) or cumin seeds (CS) at different concentrations (5, 10, 15, & 20 g/100 mL). The effect of these yogurt samples on post-acidification, proteolysis, α-amylase inhibition activity, total phenolic content, and antioxidant activity (2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, ferric reducing antioxidant potential (FRAP), and ferrous ion chelating (FIC) ability) was studied during 0,7, and 14 days of refrigerated storage at 4 °C. In addition, sensory evaluation of the yogurt was run during the first day of storage. Both COY and CSY at all concentrations showed significant effects on post-acidification, peptide content, and α-amylase inhibition activity as compared to plain yogurt (control). TPC in COY at all concentrations (42.4–165.4 μg GAE/mL) was higher than in CSY (39.0–75.7 μg GAE/mL) during the entire storage period. The radical scavenging activity increased (p < 0.05) in COY at 20, 15, and 10 g/100 mL concentrations (94 ± 0.01%, 93 ± 0.01%, and 89 ± 0.03%; respectively) on 7 days of storage. FRAP values were higher in CSY at all concentrations than COY during 7 days of storage. Higher (p < 0.05) FIC ability was observed in both types of yogurt than control. The highest overall preference score was shown at a concentration of 15 g/100 mL for both types of yogurt. In conclusion, COY and CSY at all concentrations positively enhanced natural yogurt ability to inhibit α-amylase activity with high antioxidant activity.



中文翻译:

富含香菜和小茴香种子的酸奶的蛋白水解活性,抗氧化剂和α-淀粉酶抑制活性

在香菜(CO)或小茴香种子(CS)存在下以不同的浓度(5、10、15和20 g / 100 mL)制备两种类型的酸奶(Y)。这些酸奶样品对后酸化,蛋白水解,α-淀粉酶抑制活性,总酚含量和抗氧化活性的影响(2,2-二苯基-1-吡啶并肼基(DPPH)自由基清除活性,三氧化二铁还原抗氧化电位(FRAP) ,亚铁离子螯合(FIC)能力)在4°C的冷藏条件下的0.7和14天进行了研究。此外,酸奶在储存的第一天进行了感官评估。与普通酸奶(对照)相比,所有浓度的COY和CSY均对酸化后,肽含量和α-淀粉酶抑制活性有显着影响。所有浓度的COY中的TPC(42.4–165。在整个存储期间,4μgGAE / mL高于CSY(39.0-75.7μgGAE / mL)。储存7天后,在20、15和10 g / 100 mL浓度(分别为94±0.01%,93±0.01%和89±0.03%)的COY中,自由基清除活性增加(p <0.05)。储存7天期间,所有浓度下CSY的FRAP值均高于COY。在两种类型的酸奶中均观察到比对照更高的(p <0.05)FIC能力。两种类型的酸奶在15 g / 100 mL的浓度下显示出最高的总体偏好得分。总之,在所有浓度下,COY和CSY都可以增强天然酸奶抑制α-淀粉酶活性的能力,并具有很高的抗氧化活性。储存7天后的浓度为10 g / 100 mL(分别为94±0.01%,93±0.01%和89±0.03%)。储存7天期间,所有浓度下CSY的FRAP值均高于COY。在两种类型的酸奶中均观察到比对照更高的(p <0.05)FIC能力。两种类型的酸奶在15 g / 100 mL的浓度下显示出最高的总体偏好得分。总之,在所有浓度下,COY和CSY都可以增强天然酸奶抑制α-淀粉酶活性的能力,并具有很高的抗氧化活性。储存7天后的浓度为10 g / 100 mL(分别为94±0.01%,93±0.01%和89±0.03%)。储存7天期间,所有浓度下CSY的FRAP值均高于COY。在两种类型的酸奶中均观察到比对照更高的(p <0.05)FIC能力。两种类型的酸奶在15 g / 100 mL的浓度下显示出最高的总体偏好得分。总之,在所有浓度下,COY和CSY都可以增强天然酸奶抑制α-淀粉酶活性的能力,并具有很高的抗氧化活性。两种类型的酸奶在15 g / 100 mL的浓度下显示出最高的总体偏好得分。总之,在所有浓度下,COY和CSY都可以增强天然酸奶抑制α-淀粉酶活性的能力,并具有很高的抗氧化活性。两种类型的酸奶在15 g / 100 mL的浓度下显示出最高的总体偏好得分。总之,在所有浓度下,COY和CSY都可以增强天然酸奶抑制α-淀粉酶活性的能力,并具有很高的抗氧化活性。

更新日期:2020-08-08
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