Kawatra, AshaGupta, Aditi2016-11-182016-11-182008http://krishikosh.egranth.ac.in/handle/1/86317The present investigation was conducted to study nutritional composition of two tomato genotypes (HAS-7 and ARTH-3), to develop puree and powder and study their nutritional composition, utilization and shelf-life. Tomato powders were prepared by giving pre-treatments of either CaCl2 (2%) or KMS (1%) and then dried in sun or oven (600±5). All the tomato powders and puree were found organoleptically acceptable. Mean scores of organoleptic evaluation were higher for colour, appearance, aroma and taste in the KMS treated oven dried powders of both genotypes. These two types of tomato powder as well as puree prepared from both genotypes were selected for six shelf life study of month at room temperature. Raw tomatoes of genotype HAS-7 and ARTH-3 contained 5.90 and 6.78, 31.33 and 27.82 and 3.12 and 4.03 mg per 100 g of -carotene, ascorbic acid and lycopene content, respectively. Content of -carotene, ascorbic acid and lycopene was 69.22-77.78, 211.79-279.71 and 44.77-49.94 mg/100g in tomato powder and 24.85 and 25.93, 83.20 and 81.46 and 14.38 to 17.20 in puree, respectively. The puree and powder was used for development of products including tomato soup, tomato punch, curry vegetable, dry vegetable and potato wafers (tomato flavoured) were acceptable organoleptically. Shelf life study indicated that there was gradual decrease in lycopene content and significant reduction in ascorbic acid and -carotene during storage of tomato puree and powder for six months. By the end of third month of storage period ascorbic acid was 53.84 and 52.02, 132.65 and 117.09 mg per100 g and at sixth month it was 23.13 and 23.42, 58.71 and 51.48 mg per 100 g in tomato puree and powders prepared from HAS-7 and ARTH-3, respectively. The retention of -carotene after six months of storage was 65 and 45 per cent in tomato puree and powders prepared from HAS-7 and ARTH-3, respectively. Tomato powders and puree were found to be organoleptically acceptable and microbiologically safe upto six months. These tomato powder and puree can be used to replace fresh tomatoes during off season. They can also serve as good source of nutrients specially of lycopene -carotene and vitamin C in the diets and will also helps in reduction of post harvest losses of tomato.enNutritional, Evaluation, Shelf-life, Tomato, Powder, Puree, Ascorbic acid, -carotene, LycopeneNutritional evaluation shelf-life and utilization of tomato powder and pureeThesis