A Novel Method of a High Pressure Processing Pre-Treatment on the Juice Yield and Quality of Persimmon
Jiayue Xu,
Yilun Wang,
Xinyue Zhang,
Zhen Zhao,
Yao Yang,
Xin Yang,
Yongtao Wang,
Xiaojun Liao,
Liang Zhao
Affiliations
Jiayue Xu
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Yilun Wang
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Xinyue Zhang
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Zhen Zhao
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Yao Yang
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Xin Yang
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Yongtao Wang
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Xiaojun Liao
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
Liang Zhao
National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Key Laboratory of Food Non-Thermal Processing, Ministry of Agricultural and Rural Affairs, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
This study investigates the effects of a high pressure processing pre-treatment (pre-HPP) on the juice yield of persimmon (Diospyros kaki L.) pulp and the pre-HPP plus HPP or thermal processing (TP) on microorganism inactivation and quality changes of the persimmon juice. The “Gongcheng” persimmon was selected with the highest juice yield (48.9%), and the pre-HPP set at 300 MPa/8 min increased the juice yield by 60% through an increasing pectin methylesterase (PME) activity of 25.03% and by maintaining polygalacturonase (PG) activity. For different processing modes, namely, pre-HPP plus HPP at 550 Mpa/5 min and pre-HPP plus TP treatment at 95 °C/5 min, both of the guaranteed microorganisms in the juice were below 2.0 lg CFU/mL; however, the persimmon juice treated by the pre-HPP plus HPP had higher contents of total phenol and ascorbic acid which were 16.07 mg GAE/100 g and 17.92 mg/100 mL, respectively, a lower content of soluble tannin which was 55.64 μg/mL, better clarity which was 18.6% and less color change where the ΔE was only 2.68.
