臭氧熏蒸联合气调包装对鲜西洋参采后品质的影响

The Effect of O3 Fumigation Combined With Modified Atmosphere Packaging on Post Harvest Quality of Fresh American Ginseng

摘要:

摘要：为了探究低温（0 ± 1℃）、臭氧（O3）熏蒸和气调包装（MAP）的联合处理对鲜西洋参采后品质的影响，以PE为对照，采用0.5×10-6 O3熏蒸30min并结合4种气调包装材料（IE3900-MY、IE3900-L400、IE3900-MK10和L400 PBAT-HP101），通过多维度指标（外观品质、袋内CO2和O2含量、失水率、腐烂率、抗氧化酶活性及皂苷含量）综合评价其保鲜效果。本文发现，O3熏蒸与L400 PBAT-HP101包装可显著延缓鲜西洋参品质劣变，120 d贮藏期其失水率较PE组降低1.19%，腐烂率降低至1/7；O3熏蒸与IE3900-MK10气调组可激活抗氧化防御系统，PAL、SOD和CAT等抗氧化酶活性分别提升了13.39%，5.19%和11.16%；O3熏蒸与IE3900-MY和IE3900-L400气调组可以快速调节袋内CO2和O2含量变化，与PE组相比，其CO2含量降低了约23.85%，O2含量提高了约13.24%。此外，O3熏蒸与L400 PBAT-HP101处理调节皂苷代谢：贮藏120 d后，虽然Rg1含量降低28.24%，但Re和Rb1含量分别提高23.44%和52.46%。综上，O3-MAP联合技术可以通过调控酶活性和皂苷稳态以延长贮藏期，O3熏蒸与L400 PBAT-HP101处理组对鲜西洋参内在品质和相关皂苷成分的保存效果最为显著，该研究结果可为高附加值中药材的绿色保鲜提供理论基础和技术参考。

Abstract:

Abstract: In order to investigate the effects of the synergistic treatment of low temperature (0 ± 1°C), ozone (O3) fumigation and gas-conditioned packaging(MAP) on the postharvest quality of fresh American ginseng, the experiment was conducted using 0.5 × 10-6 O3 fumigation for 30min in combination with four gas-conditioned packaging materials (IE3900-MY, IE3900-L400, IE3900-MK10 and L400 PBAT-HP101), which PE group was used as the control. The preservation quality was comprehensively evaluated by multi-dimensional indexes (appearance quality, CO2 and O2 content in the bag, water loss rate, spoilage rate, antioxidant enzyme activity, saponin content and glycoside content). The results showed that the treatment with O3 fumigation and L400 PBAT-HP101 packaging led to significantly delay on the quality deterioration. on the 120th day of storage, the water loss rate decreased by 1.19% and the decay rate decreased by 7 times. The treatment with O3 fumigation and IE3900-MK10 packaging resulted in the antioxidant defense system and the activities of antioxidant enzymes were activated, such as PAL, SOD and CAT, were increased by 13.39%, 5.19% and 11.16%, respectively. Additionally, the treatment with O3 fumigation with IE3900-MY packaging and the treatment with IE3900-L400 packaging regulated CO2 and O2 levels, reducing CO2 content by approximately 23.85% and increasing O2 content by 13.24% compared to the PE group. Furthermore, the treatment with O3 fumigation with L400 PBAT-HP101 packaging was shown to regulate the saponin metabolism: after 120 d of storage, although the Rg1 content was reduced by 28.24%, the Re and Rb1 contents were increased by 23.44% and 52.46%, respectively. In conclusion, the treatment with O3-MAP synergistic technology was demonstrated to prolong the storage period by regulating enzyme activity and saponin homeostasis, and the treatment with O3 fumigation and L400 PBAT-HP101 was identified as the the most effective in preserving the intrinsic quality and saponin compositions of fresh American ginseng. The results of this study can provide a theoretical basis and technical support for the green preservation of high value-added traditional Chinese medicinal materials.