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Pectin and cellulose extraction from passion fruit peel waste

Vietnam is one of the world’s largest producers, consumers, and exporters of fresh and produced passion fruit. Passion fruit peel accounts for 80% of the fruit’s weight, resulting in a very large amount of waste. Instead of recovering the waste, most companies choose to throw them away, causing environment pollution that subsequently has an adverse effect on human health. Passion fruit peels contain about 42% dry weight of cellulose and 18% pectin [1, 2]. Therefore, the potential of cellulose and pectin recovery from this waste is very high and quite feasible. Recovering value from fruit processing waste provides an alternative way to reduce the cost of biological waste disposal whilst creating added value for the fruit juice processing industry. However, only a few works have been found that mention the problem of pectin recovery [3-6] from passion fruit byproducts. Furthermore, to the best knowledge of the authors of this work, no research on the simultaneous extraction of pectin and cellulose from passion fruit peel has been published. Therefore, studies on the recovery of cellulose and pectin from this waste is essential and important. The purpose of this work is to confirm the potential of Vietnamese passion fruit peels as a raw material for industrial pectin extraction and CMC production. Experimental