ฉันรักการแปลDuring the storage time, the concentration of pyruvic acid increased. However, this increase was not constant during storage, possibly because it is an intermediary product of bacterial metabolism and its concentration normally fluctuates during storage as a function of bacterial activity. Lactic acid showed a statistically significant increase during storage. Regardless of variety, the mean increase observed was 10.0% and 14.4% for 3% and 6% HS, respectively. Among the varieties, the highest increase was observed in 3% San Giovanni and 6% TGT.
Malic acid was not detected in the control samples because it is an acid derived from HS. Statistical differences were observed between the varieties and the HS levels. As expected, an increased concentration of HS in yogurt was associated with a higher concentration of malic acid. Among the varieties, the highest concentration was detected in the San Giovanni samples and the lowest in the Georgia samples.