Abstract This present research, the proximate analyses, the antioxidant capacity and phenolic composition of Sinapis alba (yellow mustard seed), Brassica nigra (black mustard seed), Brassica juncea (brown mustard seed) and their autoclaved samples were evaluated. The antioxidant capacity of mustard seeds was analysed by examining antiradical activity, Fe2+ chelating activity, H2O2 scavenging and total phenolics. The mustard seeds were autoclaved to inhibit myrosinase activity. The level of antioxidant capacity and the phenolics of the mustard seeds were increased with autoclave treatment. The antiradical activity of mustard seeds were determined ACL×YM (0.810) followed by ACL×BRM (0.750), UNACLxYM (0.680), UNACLxBRM (0.600), ACLxBLM (0.590) and UNACLxBLM (0.450) types respectively (P < 0.05).

Abstract The present study was aimed to determine the effect of different types of milk and kefir grains or starter cultures on the chemical properties, and microorganism counts of kefir samples. The type of milk had a significant effect on the acidity, dry matter, protein, and CO2 values. Acidity and CO2 values increased during storage period, while dry matter, fat and protein contents decreased. However, the type of milk had no significant effect on Lactobacillus, Leuconostoc and yeast counts. In the samples produced using starter culture microorganism counts except those of L. acidophilus of the samples increased (p < 0.05) during the 14 days of storage. Higher Lactobacilli (8.52 log cfu/ml) and Lactococci (8.84 log cfu/ml) was found in kefir produced using buffalo milk and starter culture in 21 days of storage, while higher L. acidophilus (6.41 log cfu/ml) was found in kefir produced using cow milk and starter culture. In general, due to the higher dry matter and protein content and yeast population, kefir made from buffalo milk may be preferred.

Abstract In this research, the effects of cooking by convection oven and cooking by sous-vide method on the physicochemical, textural, sensorial and microbiological of gluteus medius cuts were investigated. For the sous-vide method, the meat was vacuumed sealed in special packaging material (Mylar®Cook) before being stored at + 1 °C for 0, 15, and 30 days. The samples cooked with the sous-vide method had higher moisture content (P < 0.001) and lower cooking loss than oven roasted samples. TBARS content was affected by cooking method (P < 0.01) and storage time ( P < 0.01). The 2-thiobarbituric acid reactive substances (TBARS) values of the convection oven samples were higher than those cooked with sous-vide method. The WBSF values were affected by the cooking methods. The samples cooking with oven significantly lower shear (P < 0.0001) force values than those for the sous-vide method. Samples cooked by the convection oven had higher L* (lightness), a* (redness), b* (yellowness) than the cooked with sous-vide method (P < 0.0001). The sliced meat samples cooked by oven were given higher sensory ratings than those cooked by sous-vide except texture scores.