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中国精品科技期刊2020
李家熙,张熙洋,柳晶,等. 低压静电场处理对宁夏鲜食枸杞果实采后综合品质及其挥发性风味物质的影响[J]. 食品工业科技,2025,46(23):371−383. doi: 10.13386/j.issn1002-0306.2024110278.
引用本文: 李家熙,张熙洋,柳晶,等. 低压静电场处理对宁夏鲜食枸杞果实采后综合品质及其挥发性风味物质的影响[J]. 食品工业科技,2025,46(23):371−383. doi: 10.13386/j.issn1002-0306.2024110278.
LI Jiaxi, ZHANG Xiyang, LIU Jing, et al. Effects of Low-voltage Electrostatic Field Treatment on the Postharvest Comprehensive Quality and Volatile Flavor Compounds of Lycium barbarum Linn cv. Ningxia Goji[J]. Science and Technology of Food Industry, 2025, 46(23): 371−383. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024110278.
Citation: LI Jiaxi, ZHANG Xiyang, LIU Jing, et al. Effects of Low-voltage Electrostatic Field Treatment on the Postharvest Comprehensive Quality and Volatile Flavor Compounds of Lycium barbarum Linn cv. Ningxia Goji[J]. Science and Technology of Food Industry, 2025, 46(23): 371−383. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024110278.

低压静电场处理对宁夏鲜食枸杞果实采后综合品质及其挥发性风味物质的影响

Effects of Low-voltage Electrostatic Field Treatment on the Postharvest Comprehensive Quality and Volatile Flavor Compounds of Lycium barbarum Linn cv. Ningxia Goji

  • 摘要: 为研究低压静电场(low-voltage electrostatic field,LVEF)处理对宁夏鲜食枸杞采后综合品质的影响,采用LVEF处理鲜食枸杞,分析其呼吸强度、营养指标和外观特性的变化及LVEF对枸杞贮藏期间挥发性风味物质的影响。结果表明:300 mV LVEF处理下枸杞果实硬度高于对照组,失重率和可溶性固形物含量显著低于对照组(P<0.05),色度保持效果显著优于对照组(P<0.05),抗坏血酸含量下降速度显著降低(P<0.05);贮藏期内枸杞果实呼吸强度受到抑制,呼吸高峰延迟出现;LVEF处理使鲜食枸杞的最佳食用期从常规冷藏的7~9 d延长至10~12 d,商品货架期延长约30%。电场处理前后鲜食枸杞的风味差异结果表明,LVEF处理在一定程度上良好地保持了宁夏枸杞果实中的部分独特挥发性风味物质(1-辛烯-3-醇,正己醇),而部分醛类化合物((E)-2-己烯醛)显著降低38.83%(P<0.05),这有可能是由于外加低压静电场减缓了枸杞细胞的电子传递链传递速率,降低了其呼吸强度。本研究为宁夏鲜果枸杞的高效保鲜与低压静电场的创新性应用提供理论依据。

     

    Abstract: To investigate the effects of low-voltage electrostatic field (LVEF) treatment on the postharvest comprehensive quality of fresh Lycium barbarum Linn cv. Ningxia Goji (Ningxia goji berries), the goji berries were treated with LVEF, and changes in their respiratory intensity, nutritional indicators, and appearance characteristics were analyzed, along with the impact of LVEF on volatile flavor compounds during storage. The results indicated that under 300 mV LVEF treatment, the fruit hardness of goji berries was higher than that of the control group, with significantly lower weight loss and soluble solids content (P<0.05). The color retention effect was significantly better than that of the control group (P<0.05), and the rate of ascorbic acid content decrease was significantly reduced (P<0.05). During storage, the respiratory intensity of the goji berries was inhibited, delaying the respiratory peak. LVEF treatment extended the optimal consumption period of fresh goji berries from 7~9 days under regular refrigeration to 10~12 days, increasing the shelf life by approximately 30%. The flavor differences in fresh goji berries before and after electric field treatment were analyzed. The results showed that LVEF treatment effectively maintained some unique volatile flavor compounds (1-octen-3-ol, 1-hexanol) in Ningxia goji berries, while some aldehydes ((E)-2-hexenal) were significantly reduced by 38.83% (P<0.05). This reduction might be attributed to the decreased electron transport chain rate in goji berry cells caused by the external low-voltage electrostatic field, which reduced their respiratory intensity. This study provides a theoretical basis for the efficient preservation of Ningxia fresh goji berries and the innovative application of low-voltage electrostatic fields.

     

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