@article {7038, title = {A standardized, innovative method to characterize the structure of aquatic protein hydrolysates}, journal = {Heliyon}, volume = {6}, year = {2020}, month = {Jan-06-2020}, pages = {e04170}, issn = {24058440}, doi = {10.1016/j.heliyon.2020.e04170}, url = {https://linkinghub.elsevier.com/retrieve/pii/S2405844020310148}, author = {Leduc, Alexandre and Fournier, Vincent and Henry, Jo{\"e}l} } @article {5499, title = {Dietary aquaculture by-product hydrolysates: impact on the transcriptomic response of the intestinal mucosa of European seabass (Dicentrarchus labrax) fed low fish meal diets}, journal = {BMC Genomics}, volume = {19}, year = {2018}, abstract = {

Aquaculture production is expected to double by 2030, and demands for aquafeeds and raw materials are expected to increase accordingly. Sustainable growth of aquaculture will require the development of highly nutritive and functional raw materials to efficiently replace fish meal. Enzymatic hydrolysis of marine and aquaculture raw materials could bring new functionalities to finished products. The aim of this study was to determine the zootechnical and transcriptomic performances of protein hydrolysates of different origins (tilapia, shrimp, and a combination of the two) in European seabass (Dicentrarchux labrax) fed a low fish meal diet (5\%), for 65\ days.

Results

Results were compared to a positive control fed with 20\% of fish meal. Growth performances, anterior intestine histological organization and transcriptomic responses were monitored and analyzed. Dietary inclusion of protein hydrolysates in the low fish meal diet restored similar growth performances to those of the positive control. Inclusion of dietary shrimp hydrolysate resulted in larger villi and more goblet cells, even better than the positive control. Transcriptomic analysis of the anterior intestine showed that dietary hydrolysate inclusion restored a pattern of intestinal gene expression very close to the pattern of the positive control. However, as compared to the low fish meal diet and depending on their origin, the different hydrolysates did not modulate metabolic pathways in the same way. Dietary shrimp hydrolysate inclusion modulated more metabolic pathways related to immunity, while nutritional metabolism was more impacted by dietary tilapia hydrolysate. Interestingly, the combination of the two hydrolysates enhanced the benefits of hydrolysate inclusion in diets: more genes and metabolic pathways were regulated by the combined hydrolysates than by each hydrolysate tested independently.

Conclusions

Protein hydrolysates manufactured from aquaculture by-products are promising candidates to help replace fish meal in aquaculture feeds without disrupting animal metabolism and performances.

}, keywords = {Aquaculture, Aquafeed, By-products, European seabass, Fishmeal replacement, Hydrolysate, Illumina RNA-sequencing, Intestinal organization, Metabolic pathways}, doi = {doi.org/10.1186/s12864-018-4780-0}, author = {Leduc, Alexandre and C{\'e}line Zatylny-Gaudin and Robert, Marie and Corre, Erwan and Le Corguill{\'e}, Gildas and Castel, H{\'e}l{\`e}ne and Lefevre-Scelles, Antoine and Fournier, Vincent and Gisbert, Enric and Andree, Karl B. and Jo{\"e}l Henry} } @article {3626, title = {Molecular characterization of peptide fractions of a Tilapia (Oreochromis niloticus) by-product hydrolysate and in vitro evaluation of antibacterial activity}, journal = {Process Biochemistry}, volume = {50}, year = {2015}, pages = {487-492}, author = {Robert, Marie and C{\'e}line Zatylny-Gaudin and Fournier, Vincent and Corre, Erwan and Gildas Le Corguille and Bernay, Beno{\^\i}t and Jo{\"e}l Henry} } @article {3371, title = {Transcriptomic and peptidomic analysis of protein hydrolysates from the white shrimp (L. vannamei).}, journal = {J Biotechnol}, volume = {186}, year = {2014}, month = {2014 Sep 30}, pages = {30-7}, abstract = {

An RNAseq approach associated to mass spectrometry was conducted to assess the composition, molecular mass distribution and primary sequence of hydrolytic peptides issued from hydrolysates of white shrimp (Litopenaeus vannamei) by-products. High performance size exclusion chromatography (HPSEC) analyses indicated that 69.2\% of the 214-nm-absorbing components had apparent molecular masses below 1000 Da, and 88.3\% below 2000 Da. OFFGEL-nLC-MALDI-TOF/TOF and nLC-ESI-MS/MS analyses led to the identification of 808 peptides based on the NCBI EST databank (161,397 entries) completed by the new L. vannamei databank (58,508 entries) that we created from the RNAs of tissues used for hydrolysate production. Whereas most of hydrolytic peptides have a MW below 2000 Da, preliminary investigations of antimicrobial properties revealed three antibacterial fractions that demonstrate functional activities. The abundance of small peptides as well as the biological activities detected could imply very interesting applications for shrimp hydrolysate in the field of aquaculture feeding.

}, issn = {1873-4863}, doi = {10.1016/j.jbiotec.2014.06.020}, author = {Robert, Marie and C{\'e}line Zatylny-Gaudin and Fournier, Vincent and Corre, Erwan and Gildas Le Corguille and Bernay, Beno{\^\i}t and Jo{\"e}l Henry} }