Study on shelf life of Lactic Acid Bacteria inoculated vacuum packed Tenualosa ilisha (Hamilton, 1822) at 5oC.

Abstract

Lactobacillus pentosus FPTLB13 was used as a biopreservative agent for hilsa steaks (Tenualosa ilisha) in vacuum packs at 5 O C. The inoculated steaks (T) exhibited lowering of pH from 6.2 to 5.6 on day 12, probably due to production of organic acids. A sharp increase in total volatile base nitrogen was seen after day 12 of storage in treated steaks which could be attributed to extended lag phase of the spoilage microorganisms as result of competitive inhibition by lactic acid bacteria (LAB) and effect of acidification. Application of LAB cultures seems to have decreased the rate of trimethylamine formation (p<0.05) in the inoculated steaks at 5 O C over a period of 15 days. Packing of hilsa steaks in vacuum cuts off oxygen supply and therefore lipid oxidation is reduced. The trend in changes in free fatty acid values of hilsa steaks suggested that application of LAB significantly reduced the values compared to control (C) (p<0.05). Application of LAB do not seem to improve (p>0.05) the texture and flavour of hilsa steaks, although the scores of overall acceptability suggests a significant improvement (p<0.05). The inoculated steaks were found to have a shelf life of 12 days under vacuum at 5 O C.

Integrated transcriptome catalog of Tenualosa ilisha as a resource for gene discovery and expression profiling

“…Raw RNA-Sequence reads of different tissues of Tenualosa ilisha have been deposited in the NCBI Sequence Read Archive (SRA) database under the NCBI Bioproject (https://www.ncbi.nlm.nih.gov/bioproject/) with accession PRJNA850620 22 . Final set of transcripts have been submitted to NCBI Transcriptome Shotgun Assembly (TSA) www.nature.com/scientificdata www.nature.com/scientificdata/ database (https://www.ncbi.nlm.nih.gov/genbank/tsa/) under the accession no GKAU00000000 23 . Raw assembly data, annotation file and Transdecoder predicted peptide files have been deposited in Figshare 24 .…”