Abstract
Pineapple is a popular tropical fruit. This work aimed to investigate the total phenolic and total flavonoid content in pineapple by-products including peel, core and pomace. In addition, the antioxidant activities of their extract were determined. The results showed that pineapple peel gave the highest extract yield followed by core and pomace, while the peel and core extract contain a high amount of phenolic and flavonoid. In addition, the highest DPPH radical and ABTS+ radical scavenging activity was pineapple peel extract. The Fuzzy Analytical Method has been performed to evaluate the best value material by using 3 criteria which are composed of extract yield, amount of bioactive compound and its antioxidant activities. The results showed that the peel was the best value material followed by core. This can be pointed out that the pineapple peel could be a choice for food ingredients.
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