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Eco-enzyme is a type of natural compound that can be extracted normally from citrus fruit peels or waste and various other sources. It is a complex solution produced by the fermentation fresh kitchen waste such as vegetable and fruit peels. It is a type of vinegar made by fermenting food waste with sugar to form alcohol. Eco-enzyme is fermented solution made from a mixture of sugar, fruit peels, and water mostly in a ratio of 1:3:10. This review, in particular, focuses on the citrus Eco-enzyme as citrus fruit extracts and citrus flavonoids have the potential to possess promising biological characteristics due to their phenolic profile and antioxidant properties. Numerous innovative techniques used to produce eco-enzymes using different raw materials have been discussed in detail. Such techniques are cost-effective, eco-friendly, and possess multipurpose applications. The production of eco-enzyme not only lessens the compilation of organic waste but also provides a substitute for synthetic chemicals that are harmful to both human health and the environment. However, the major applications, including cleaning floors, utensils, gardening, and other innovative techniques of recycling and reusing natural trash that will assist in reducing fruit waste, have been explored in the present review.
Benny et al. (Sun,) studied this question.