Vol. 9, Issue 6 (2020)

Author(s):
Ravindra R Salve and Subhajit Ray

Abstract:
Pineapple (Ananas Comosus) is the most important and delicious fruit among other fruits cultivated worldwide and India is one of the leading producer of pineapple as well as different processed product e.g. juice, jam, jelly, marmalade etc. Now during processing a huge quantity of pineapple waste has been generated every year. Pineapple waste consisting of Crown, Peel, stem and Core contributes more than fifty percent waste of the whole fruit. Interestingly waste fraction contains a significant quantity of valuable nutrients and bioactive substances. Though conventionally pineapple waste management deals with dumping or burning in the field, cattle feed or conversion of biogas but exploitation of high-value nutritional and bioactive components are essential for effective waste utilization. Therefore both the conventional e.g. soxhlet extraction, maceration, hydrodistillation etc. and nonconventional methods e.g. ultrasound assisted extraction, pulsed electric field extraction, enzyme assisted extraction, microwave assisted extraction, pressurized liquid extraction, and supercritical fluid extraction (SCFE) are employed to extract bioactive compounds like anthocyanin, polyphenols, flavonoids, flavones, terpenoids, alkaloids, bromelain, pectin etc. and nutritional components e.g. protein, some insoluble fibres, carbohydrate and micronutrients e.g. Vitamin and minerals e.g. Fe, Ca, Mn, Zn, Cu, Cd, and Na from pineapple waste. Nowadays non-conventional extraction techniques also termed as green extraction technology has gained significant importance over the conventional techniques due to requirement of less time, utilisation of less solvent, reduction of the consumed energy and subsequent purification steps. Moreover extracted bioactive compounds from pineapple waste can be utilized to develop functional food and nutraceuticals.