Tropical fruit has been widely recognized for their sensorial quality and their health benefits, being an important source of carbohydrates, vitamins, minerals, fibers and a large number of bioactive compounds. Indonesia is a large producer of tropical fruits such as pineapple, mango, avocado and papaya. Due to a limited shelf life, fresh fruit needs to be processed to prolong the shelf life and maintain its value. Nutritional and Health Value of Tropical Fruits During Vacuum Frying | http://safimex.com
Vacuum frying is an emerging technology of innovative processing for fruit and vegetable products. Vacuum frying is a deep-fat frying process, which is carried out in a closed system, below the atmospheric pressure, substantially reducing the boiling point of water and, hence, the frying temperature. Vacuum frying may process fresh fruit into chips that have low moisture and fat content, while preserving certain health benefits.
Nutritional and Health Value of Tropical Fruits During Vacuum Frying | SAFIMEX
During vacuum frying, important process variables are temperature, vacuum level, and time as well as specific pre-treatments of the fruit. The frying process causes structural changes to take place; pores produced during gas vapour expansion in frying has been observed in sweet potato, banana, potato, carrot and apple (1-4). Moreover, maturity of the fruit plays a role in structural, compositional and physiological properties, and as a consequence ripening affects physical and textural changes. Starch that is converted into sucrose and maltose during banana ripening affect the product expansion and diameter shrinkage. However, little is known about the effect of vacuum frying on bioactive compounds. Also, the effect of fresh fruit composition and structural properties in relation to the vacuum fried fruit chips has been limited studied.
Many Asian countries (e.g. Indonesia, Japan, Thailand) are using the vacuum frying technology to produce high nutritious snacks with a low fat content. And vacuum fried fruit can be added as ingredient in many different forms to the ready-to-eat breakfast cereals.
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