共查询到19条相似文献,搜索用时 109 毫秒
1.
2.
3.
颗粒橙汁(即粒粒橙汁)是一种在橙汁中含有一定量柑桔果囊的新型饮料。它既能适应消费者对果汁饮料的要求,又能给予消费者一种品嚼水果混合物的满足感。因此,国内各厂家纷纷研究开发,目前已有产品问世,在市场上销售 相似文献
4.
5.
6.
7.
罐装颗粒橙汁是一种在橙汁中含有一定量柑桔果囊的罐装饮料。自1977年在世界市场投放以来,由于既能适应消费者对果汁饮料的要求,又能给予消费者一种吃水果混合物的满足感,因此虽生产成本较高,仍发展较快,美国、日本等国发展尤为迅速,我国1986年开始研制,近年来,四川、广东等地已有批量产品出售。1987年,国家科委组织引进日本国产精工株式会社的柑桔颗粒加工及罐装颗粒橙汁生产的部分设备,由广州开发区新技术开发公司、广东罐头厂及香港天涛有限公司组成的广开罐头食品开发有限公司负责生产,1989年4月试 相似文献
8.
9.
本文从桔汁胞密度变化、果汁或介质溶液粘度、悬浮剂的显微结构等方面研究了粒粒橙汁中汁胞的悬浮稳定性。结果表明,汁胞密度随着果汁或介质溶液的密度变化而改变;在汁胞与介质发生渗透平衡后,其密度总是大于果汁的密度。果汁粘度的增加在一定程度上有利于汁胞的悬浮,但它与汁胞悬浮稳定性没有本质的相关关系。汁胞悬浮的稳定性主要取决于悬浮剂在果汁中的微结构。透射电镜观察发现,果汁中的悬浮剂共有三种结构:第一种为长纤维状,并相互交错成立体网状;第二种为筛网状;第三种为短纤维状或粒状。汁胞在具有第一种结构的体系中悬浮最稳定,第二种次之,第三种不稳定;琼脂、琼脂+魔芋葡甘聚糖、悬浮剂1#可在果汁中呈现第一种结构,是较理想的悬浮剂。 相似文献
10.
11.
12.
13.
本文主要研究了酸化、低温和山梨酸盐结合对橙汁贮藏的影响。结果表明,将橙汁酸化到pH2.0和pH2.5,于5℃下贮藏12周,其细菌总数、酵母和霉菌数明显减少。使用0.03%山梨酸或山梨酸钾并酸化到pH2.5的橙汁,可在10℃下贮藏10周以上。但山梨酸盐会使Vc分解。这表明,Vc含量较高的橙汁中,微生物数量也高。 相似文献
14.
15.
Effect of some parameters of air-jet on pneumatic extraction of citrus juice and juice sacs 总被引:1,自引:0,他引:1
A pressurized jet of air was employed for extracting juice and juice sacs (CJJS) from halved citrus fruits. The results showed that air pressure, nozzle diameter, the number of passes, and route of the nozzle all had significant effects on percentage of removed CJJS (PRJS). The air pressure had the greatest effect on PRJS while the nozzle diameter had the least. The PRJS was the highest at nozzle diameter of 3 mm and the least at nozzle diameter of 2.5 mm. The most effective route of the nozzle for extracting CJJS was a figure of eight route. Air pressures of 300 and 400 kPa were operative enough to remove whole juice sacs from citrus fruits. The mean values of measured impingement loads for air pressures of 300, 400, and 600 kPa were found to be 2.42, 3.25, and 5.06 N, respectively. Impingement force increased with nozzle diameter. 相似文献
16.
17.
Min Zhang Hui-Zhong Zhao Lei-Jie Zhang Le Yang Zhi-You Zhong Jian-Hua Chen 《International Journal of Food Properties》2013,16(1):134-144
An improved thermal conductivity probe system consisting of a probe heater, control circuits and data test system was developed and described. It has the merits of the short duration of the experiments, simplicity, high accuracy, and relatively small sample requirement. The measurement time is about 20 s. The effective volume of sample is 50 ml. Calibration of the probe with glycerin and ethanol in this work exhibits an accuracy of 1.4% and 1.9%, respectively. The probe system was used to measure the thermal conductivity of orange juice. The measured thermal conductivity values were linearly dependent on the concentration and temperature of the orange juice. A decrease in the concentration of orange juice and an increase in the temperature resulted in an increase in the values of thermal conductivity. However, the influence of concentration on the thermal conductivity of orange juice was stronger than that of temperature. An empirical model for the thermal conductivity of orange juice as a function of concentration and temperature was obtained. 相似文献
18.
在猕猴桃汁加工过程中,采用冷却压榨工艺经特殊处理后,其出汁率与加热压榨基本接近,且能更好地减少Vc等营养成分的损失,保持果汁原有的风味,产品口感纯正。 相似文献