| 摘要: |
| 研究了巴杀橙汁?在较高温冷藏环境(8℃)、较低温冷藏环境(4℃)、冰温(-2℃)以及冻藏(-20℃)四种不同温度下储藏五周的品质变化规律。结果表明：与其他储藏温度相比，冰温条件下储藏的橙??在可溶性物、挥发性风味物质等与风味相关的指标上更具优势，也就是该条件下储藏的橙汁?的风味品质更优。在维生素C的保存方面，冻藏则更具优势。8℃储藏条件下的橙汁在品质上劣于其他三种储藏温度。1)冰温条件下，储藏期间橙汁的可溶性固形物变化最小；检测出的挥发性风味物质种类最多，其中萜烯类、醇类种类最多，醇类和酯类的相对含量最高。2)冻藏条件下，第五周时VC含量最高；检测出的挥发性风味物质中，醛类的相对含量也最高。3)冷藏条件下，较高储藏温度的果??的可溶性固形物含量变幅较大；检测出的挥发性风味物质中，化合物总数最少，但烯萜类组分的相对含量最高，重要风味贡献物月桂烯、里那醇和柠檬醛的相对含量最低。4)各储藏条件下，橙汁?的总酸、pH值和色度的变化差异不显著。 |
| 关键词: 食品包装与贮藏 橙汁 品质 冷藏 冰温 冻藏 |
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| Effects of Four Different Cold Storage Conditions on the Quality of Orange Juice |
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Lin Xian, Xu Yujuan, Wu Jijun, Chen Yulong, Wen Jing, Zhang Yan, Tang Daobang
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| (Sericulture and Farm Produce Processing Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Open Access Laboratory of Agricultural Produce Processing) |
| Abstract: |
| Effects of four different low storage temperatures-higher refrigeration temperature(8℃),lower refrigerated temperature(4℃), hyo-on temperature(-2℃) and freezing temperature(-20℃) on the quality of orange juice were studied. Results show that: 1)In juice stored under hyo-on storage condition, changes of soluble solid content are the smallest; total number of detected volatile flavor compounds, numbers of hydrocarbon terpenes and numbers of alcohols are the largest; relative content of alcohols and esters are the highest. 2)In juice stored under freezing storage condition, vitamin C level detected in the fifth week and relative content of aldehydes in volatile flavor compounds are the highest. 3)In juice stored under refrigeration condition, variation in content of soluble solid in the one stored under higher refrigeration temperature appears to be greater ; number of detected volatile flavor compounds is the smallest; however, relative content of hydrocarbon terpenes is the highest; relative contents of myrcene, linalool and citral are the lowest. 4)Under all storage conditions, differences in changes of total acid, pH and color of the orange juice are not significant. |
| Key words: Food package and preservation Orange juice Quality Refrigeration storage Hyo-on storage Freezing storage |
