Study on Standardisation and Quality Evaluation of Peanut Milk by Different Processing Methods

Abstract

Peanut (Araches hypogea) is an important oilseed crop originated from South Africa, while India representing one of its leading producer nearly 14% of world peanut production. Now a days some of the lifestyle changes and medical issues like cow’s milk allergy, lactose intolerance and hypercholesterolemia people were shifted into plant based nondairy beverages. Peanut milk was developed from two different peanut varieties viz., TNAU CO-6 and local variety. Proximate composition of local and TNAU CO 6 variety of peanut was analyzed and the carbohydrates, protein, fat was high in TNAU CO 6 peanut variety and its value was 26.7 (g/100g), 27.8 (g/100g), 38(g/100g) when compared to local variety, its value was 25.2 (g/100g), 24.7 (g/100g), 39(g/100g) respectively. Peanut milk was extracted by five different processing method: fresh soaking, blanching, roasting and germination methods in both local and TNAU CO 6 variety. Peanut milk prepared without any treatments and processing was considered as a control peanut milk. Among the different treatment, the best treatment was selected based on sensory scores in each processing methods of both peanut varieties. Among these different treatments blanching method B1 (2mins) was best in local variety, B2(3 mins) was best in CO 6 variety. In roasting method R2 (roasting for 5 mins and soaking for 3 hrs), soaking method S2(3 hrs soaking), germination method G1(8 hrs germinated) was best treatment in both the selected peanut varieties. Based on the observation and sensory evaluation, the result showed that among these five processing methods roasting method was the best method for the peanut milk extraction and its physiochemical properties were analyzed in both the varieties of prepared peanut milk among these CO 6 variety peanut milk had good result and better acceptability.