Abstract:
Appropriate conditions in the production of garlic oleoresins (Chiengmai and Srisagate Var.) for dispersed spice preparation and food product application were studied. Effect of extraction conditions comprising initial moisture content (use storage time as measuring criteria) at 4, 6, 8 and 10 months., garlic : methanol ratio at 1:1, 1:2, 1:3 and 1:4 (w/w), extraction time at 4, 5 and 6 hours and evaporation temperature at 30, 35, 40 and 45℃ were studied. The best condition for each experiment was selected by measuring yields, pyruvate content, sensory quality and residual methanol of the products. Dispersed spice was prepared by using pregel waxy maize starch, maltodextrin and glucose syrup solid as diluents, the best quality products were selected according to their dispersibilities and solubilities values. Flavor profiles of the developed products were analysed and their sensory qualities were compared with those of garlic power in instant noodle soup mix and snack seasoning. The most appropriate moisture contents for Chiengmai and Srisagate (var.) garlics are 52.49-54.96 and 50.16-51.61% by weight respectively. The ratio of garlic : methanol, 1:2, 4 hours extraction and 45℃ solvent evaporation were the best conditions found for oleoresins extractions from both variety garlics. The oleoresin yield at this condition was 12-14% by weight. Dispersed spices were prepared by using 17-19 DE. Maltodextrin. The middle note flavor of the Chiengmai variety was fresh while that found for the Srisagate was meaty. Both products can effectively be used in the two selected food products.