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中国精品科技期刊2020
丁真真,夏娜,刘艳全,等. 不同干燥方式对5种无花果干营养成分、抗氧化活性和挥发性成分的影响[J]. 食品工业科技,2025,46(13):1−11. doi: 10.13386/j.issn1002-0306.2024080042.
引用本文: 丁真真,夏娜,刘艳全,等. 不同干燥方式对5种无花果干营养成分、抗氧化活性和挥发性成分的影响[J]. 食品工业科技,2025,46(13):1−11. doi: 10.13386/j.issn1002-0306.2024080042.
DING Zhenzhen, XIA Na, LIU Yanquan, et al. Effects of Different Drying Methods on Nutritional Components, Antioxidant Activity and Volatile Components of Five Kinds of Dried Figs[J]. Science and Technology of Food Industry, 2025, 46(13): 1−11. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024080042.
Citation: DING Zhenzhen, XIA Na, LIU Yanquan, et al. Effects of Different Drying Methods on Nutritional Components, Antioxidant Activity and Volatile Components of Five Kinds of Dried Figs[J]. Science and Technology of Food Industry, 2025, 46(13): 1−11. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024080042.

不同干燥方式对5种无花果干营养成分、抗氧化活性和挥发性成分的影响

Effects of Different Drying Methods on Nutritional Components, Antioxidant Activity and Volatile Components of Five Kinds of Dried Figs

  • 摘要: 不同干燥方式可能会导致无花果颜色和质地的改变,加速其营养物质的流失。本文以5个无花果品种(‘波姬红’‘金傲芬’‘中紫’‘青皮’和‘新疆早黄’)为研究对象,通过气质联用(gas chromatography-mass spectrometry,GC-MS)结合电子鼻技术对无花果在热风干燥(60 ℃,热风干燥)和真空冷冻干燥处理的营养、抗氧化活性和挥发性成分进行表征。结果显示:干燥方式对5种无花果营养成分的影响差异显著,其中,‘中紫’受干燥影响的颜色变化程度最小。热风干燥处理增加了5种无花果的总酸,以‘波姬红’和‘金傲芬’的总酸增加最多。冷冻干燥处理‘新疆早黄’的抗氧化活性较高,其总黄酮保留率比其热风干燥高了47.83%,还原力显著增高(P<0.05),总酚含量为44.82 mg GAE/g。电子鼻结果的整体区分度较好,5种无花果干共检测出85种挥发性成分,其中,‘波姬红’的挥发性成分受干燥方式影响最小,均以醛类为主。‘金傲芬’和‘中紫’的鲜样酮类经热风干燥处理转化为醛类,以苯甲醛和己醛为主。‘青皮’和‘新疆早黄’的鲜样酮类经热风干燥处理转化为醇类,均以苄醇为主,具有茉莉花香等香味。综上所述,冷冻干燥‘新疆早黄’的营养和抗氧化性保留最好,而‘波姬红’的挥发性成分受干燥方式影响最小。本研究可为筛选生产无花果果干的干燥方式以及适宜加工品种提供一定的科学依据和参考。

     

    Abstract: Drying methods may cause changes in the color and texture of figs, accelerating the loss of nutrients. In this study, five fig varieties ('Boji red' 'Orphan' 'Zhongzi' 'Qingpi' and 'Xinjiang Zaohuang') were used as research subjects. The nutritional components, antioxidant activity, and volatile compounds of figs dried by hot air drying at 60 ℃ and vacuum freeze-drying were characterized using gas chromatography-mass spectrometry (GC-MS) combined with electronic nose technology. The results showed that the effects of drying methods on the nutritional components in five fig varieties were significantly different, with the 'Zhongzi' variety showing the least color change. Hot air drying increased the total acid content of the five fig varieties, with 'Boji red' and 'Orphan' showing the largest increase. The freeze-dried 'Xinjiang Zaohuang' exhibited superior antioxidant activity compared to its hot air-dried counterpart, with a 47.83% higher retention rate of total flavonoids and a significantly increased reducing power (P<0.05). The total phenolic content reached 44.82 mg GAE/g. The electronic nose results suggested a good overall discrimination. A total of 85 volatile compounds were detected across the five fig varieties, with 'Boji red' figs being the least affected by drying, predominantly containing aldehydes. After hot air drying treatment, the ketones in control figs (in fresh, without any treatment) of 'Orphan' and 'Zhongzi' were converted into aldehydes (mainly benzaldehyde and hexanal). The ketones in hot air drying-treated figs of 'Qingpi' and 'Xinjiang Zaohuang' were converted into alcohols (primarily benzyl alcohol), which imparted a jasmine-like fragrance. In summary, vacuum freeze-drying-treated figs of 'Xinjiang Zaohuang' had the best retention of nutritional components and antioxidant activity, while volatile compounds of 'Boji red' figs were the least affected by drying methods. This study provides a scientific basis and reference for selecting appropriate drying methods and fig varieties for fig drying production.

     

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