Concentrated fruit juice refers to a beverage made by removing a certain proportion of natural water from the original juice using specific methods. The soluble solid content in juices extracted from different fruits varies, generally within the range of 5%-20%. The production of concentrated juice typically requires dehydration to increase the solid content to 60%-75%. This significantly reduces volume, saving packaging and transportation costs, and facilitates storage and transport.
Traditional methods for concentrating juice include steam thermal concentration, vacuum减压 concentration, thin-film evaporation concentration, and freeze concentration. These methods have numerous drawbacks: large equipment footprint, high investment, phase changes during the process, high steam consumption, high energy consumption, long concentration time, inability to achieve the required sugar content, and damage to the effective components of the material!
In recent years, the rapid development of membrane separation technology has led to its widespread application in areas such as fruit and vegetable beverage filtration and juice concentration. Membrane separation technology achieves the separation, purification, and concentration of different components in the feed liquid through selective separation by the membrane. The entire process involves no phase change, requires no additives, is more environmentally friendly, and has lower energy consumption, offering significant economic and social benefits for enterprise development.
Using ultrafiltration membrane separation equipment technology for juice filtration ensures stable filtration results with high precision. The filtered juice contains no visible turbidity, the filtrate is clear, and there is no loss of juice flavor substances. The juice color value remains stable, improving product quality while extending the product's shelf life. Using nanofiltration or reverse osmosis membrane separation equipment technology for juice pre-concentration can significantly reduce the energy consumption of juice concentration. Room temperature concentration effectively preserves the original flavor of the juice.
Taking the concentration of peach juice by a juice production enterprise in Shandong as an example, the sugar content of peach juice is 5-6brix, and it needs to be concentrated to 70%. The daily processing capacity of fresh peach juice is 40 tons. Before adopting membrane separation equipment, direct vacuum减压 concentration removed 36-37 tons of water, yielding 3-4 cubic meters of concentrate. The dehydration energy consumption was 120 yuan/ cubic meter, meaning the daily energy cost was approximately 4400 yuan. Moreover, the long thermal concentration time resulted in severe loss of juice aroma, leading to reduced quality. After adopting membrane concentration technology and equipment, energy consumption per ton can be saved by 90 yuan, meaning a daily saving of 3300 yuan. Additionally, room temperature membrane concentration effectively ensures the quality of the juice.
Jiahe Filtration's membrane separation nanofiltration and reverse osmosis equipment offer numerous advantages, including high temperature resistance, corrosion resistance, high separation efficiency, easy cleaning and disinfection, good mechanical performance, and long service life. For more咨询 on juice membrane concentration technology, welcome to contact Chongqing Jiahe Filtration Technology Co., Ltd. for communication and exchange. We will provide professional technical solutions based on your actual situation.
