Abstract

A COMPLETE REVIEW ON GUAVA LEAF EXTRACTION PROCEDURES

*Agaldeeti Aishwarya and Dr. G. Uma Rani

ABSTRACT

Psidium gujava Linn [Guava] is used in the traditional medicine in tropical and subtropical areas all over the world with various pharmacological effects.it is wounder that one forth of world population using traditional medicine to avoid the side effects which are causing due to allopathic medicines. From the immemorial times the traditional medicines are the main source to cure the human diseases. They are naturally considered for their bio-friendly and eco-friendly purpose. Many countries adopting the plant-based medicines to avoid the major types of health-related factors. During the forecast timeline till 2022 the herbal medicines increased rapidly. The fruit has the ability in nutrition in human body.it has unique flavour and different health benefits. Guava compresses some chemicals such as guajanoic acid, saponins, carotenoids, pentacyclic triterpenes, ellagic acid, uvaol etc. Different solvents are been using for the extraction like water, ethanol, methanol. the leaves are widely used in the treatment of diabetes, several heart diseases, gastro intestinal problems, oral ulcers etc. the chemical composition have a wide range of proteins and galactose about 13-29%. The guava leaf containing different kinds of phytochemical constituents among them Quercetin has remarkable features. They have various biological activities like anti-microbial, anti-inflammatory, antifungal, anti-hyper lipidemic and also for the treatment of gastrointestinal problems guava leaf has great potential. The different extractions procedures i.e., maceration, percolation, solid liquid extraction, ultrasound extraction, steam distillation, sonication is used for the extraction with various solvents and cosolvents. Many comparative studies are done for the guava leaf extracts to check their activity with various pharmacological effects.

Keywords: Herbal medicines, phytochemical constituents, biological activities, nutrition, comparative study.