[关键词]
[摘要]
为探讨不同规格硅窗包装袋处理对黄秋葵的保鲜效果,以不同硅窗面积热合PVC包装袋(空白组、6 cm2、8 cm2、10 cm2)处理采后黄秋葵,并对黄秋葵的感官品质(腐烂、锈斑、硬度、色泽)及理化指标(电导率、Vc、L*)进行统计及分析。结果表明:黄秋葵在4 ℃贮藏期间,10 d时达到最大呼吸强度。硅窗气调包装可以有效改善黄秋葵采后贮藏期间的感官品质,处理15 d (80.52%、84.22%、86.34%)与20 d(75.92%、79.36%、78.26%)时,6 cm2与8 cm2、10 cm2处理组有显著性差异(p<0.05),这一结果与CO2浓度、O2浓度、电导率、L*显著性相关(p<0.05),即通过气体浓度有效抑制了组织电导率,提高了L*,从而显著提高了黄秋葵贮藏感官品质。从贮藏效果来看,4 ℃贮藏时,PVC袋(30 cm×40 cm,46 μm)热合8 cm2(0.7 mm厚)即能够最大程度的减少黄秋葵采后腐败率,从而达到延长黄秋葵货架期的目的。
[Key word]
[Abstract]
In order to investigate the effect of different sizes of silicon window packaging bags on preservation of okra, post-harvest okra was treated with PVC bags with different sizes of silicon windows (blank group, 6 cm2, 8 cm2, 10 cm2). The sensory quality (decay, rust spot, hardness, color) and physical and chemical indexes (electrical conductivity, Vc, L*) of okra were analyzed. Results showed that the maximum respiratory intensity of okra was found at 10 d at 4 ℃. Modified atmosphere packaging with silicon window can effectively improve the sensory quality of okra during postharvest storage. When treated for 15 days (80.52%, 84.22%, 86.34%) and 20 days (75.92%, 79.36%, 78.26%), there were significant differences between 6 cm2 and 8 cm2, 10 cm2 treatments (p<0.05). These results were significantly correlated with CO2 concentration, O2 concentration, conductivity and L* (p<0.05). The electrical conductivity of tissues was effectively inhibited and L* was increased by gas concentration, which could significantly improve the sensory quality of Okra during storage. From the storage effect, when stored at 4 ℃, PVC bags (30 cm×40 cm, 46 μm) were heated to 8 cm2 (0.7 mm thick) to minimize the spoilage rate of okra after harvest, thus prolonging the shelf life of okra.
[中图分类号]
[基金项目]
山东省现代农业产业技术体系蔬菜创新团队贮藏加工岗位(SDAIT-05-14)