食品科学 ›› 2022, Vol. 43 ›› Issue (16): 122-128.doi: 10.7506/spkx1002-6630-20211024-256

• 食品化学 • 上一篇    下一篇

石榴皮醇提物对薯条深度油炸过程中煎炸油氧化稳定性及丙烯酰胺含量的影响

戚岱莎,李舒雲,张清   

  1. (四川农业大学食品学院,四川 雅安 625014)
  • 出版日期:2022-08-25 发布日期:2022-08-31
  • 基金资助:
    四川省教育厅自然科学重点项目(17ZA0304)

Effect of Ethanol Extract of Pomegranate Peels on the Oxidative Stability of Frying Oil and Acrylamide Content during Deep Frying of French Fries

QI Daisha, LI Shuyun, ZHANG Qing   

  1. (College of Food Science, Sichuan Agricultural University, Ya’an 625014, China)
  • Online:2022-08-25 Published:2022-08-31

摘要: 考察不同添加量(0.01%、0.02%、0.03%、0.07%、0.14%)石榴皮醇提物(ethanol extract of pomegranate peel,EEPP)对薯条深度油炸过程中煎炸油的氧化稳定性和丙烯酰胺(acrylamide,AA)生成情况的影响。结果表明EEPP表现出较高的1,1-二苯基-2-三硝基苯肼自由基抑制率(20%~97%)、2,2’-联氮基-双-(3-乙基苯并噻唑啉-6-磺酸)二铵盐阳离子自由基抑制率(16%~91%)和铁离子还原力(0.3~8.24 mmol/g);其总酚含量为20.14 mg/g。相较于低添加量的EEPP,添加量为0.14%的EEPP对煎炸油中酸价、过氧化值和极性组分含量的增长速率延缓效果最好,从而表现出最高的氧化稳定性。另外,在此添加量下,对薯条和煎炸油中的AA也具有良好的抑制作用(抑制率达83%)。所以,EEPP具有成为新型抗氧化剂的潜在能力,以延缓薯条油炸过程中煎炸油的氧化劣变速率和有效抑制薯条油炸过程中AA的产生,确保煎炸食品的安全性。

关键词: 石榴皮提取物;薯条;深度油炸;丙烯酰胺

Abstract: The effect of adding different concentrations (0.01%, 0.02%, 0.03%, 0.07% and 0.14%) of ethanol extract of pomegranate peel (EEPP) on the oxidative stability of frying oil and the content of acrylamide (AA) during the deep frying of French fries were studied in this work. The results showed that EEPP exhibited a high inhibition rate against 2,2-diphenyl-1-picrylhydrazyl (DPPH) (20%–97%), 2,2’-azinobis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical cation (16%–91%) and ferric reducing power (0.3–8.24 mmol/g), and had a total phenol content of 20.14 mg/g. Addition of 0.14% EEPP was the most effective in delaying the increase in acid value (AV), peroxide value (POV), and total polar component content in frying oil, indicating the highest oxidation stability. Moreover, at this concentration, a good inhibitory effect on AA in French fries and frying oil (with inhibition rate of up to 83%) was also observed. Therefore, EEPP has the potential as a novel antioxidant to delay the oxidation process of frying oil and effectively inhibit the production of AA during the processing of French fries to ensure food safety.

Key words: ethanol extract of pomegranate peel; French fries; deep frying; acrylamide

中图分类号: