Probiotic in rennet paste can affect lipase activity of rennet and lipolysis in ovine cheese.

摘要

Lambs were subjected to three different feeding regimes (mother suckling MS, artificial rearing AR, and artificial rearing with 7log₁₀ cfu/ml Lactobacillus acidophilus supplementation to the milk substitute ARLb) and slaughtered at 20 d and 40 d of age for each feeding treatment. Lambs abomasa were processed to rennet paste and lipases activity was evaluated. Rennet paste was used for Pecorino cheese production. Free fatty acids (FFAs) and conjugated linoleic acids (CLAs) were detected in cheese at 60 d of ripening. Lipase activity was found higher in ARLb than in MS and AR rennet from lambs slaughtered at an older age. A reduction of all FFAs was observed in all cheeses when passing from 20 d to 40 d of slaughtering. CLAs were more abundant in ARLb cheeses at both 20 and 40 d. Milk substitute with Lb. acidophilus improves enzymatic features of rennet, and health and nutritional characteristics of ovine cheese.