title: Effect of temperature on chitin and astaxanthin recoveries from shrimp waste using lactic acid bacteria.
abstract: The chitin and astaxanthin recoveries by lactic acid fermentation of shrimp wastes (Litopenaeus sp) were conducted in bed-column reactors at 15, 20, 25, 30, 35, 40 and 45 degrees C. The response surface methodology showed that the fermentations carried out in the 27-36 degrees C temperature range with lactic acid above 0.319 mmol/g resulted in the highest demineralization. The maximal deproteinizations were attained from 30 to 40 degrees C. The extraction of free-astaxanthin did not present significant differences between 20 and 35 degrees C and the proportion of cis-stereoisomer forms increased with temperature. The growth rates of Lactobacillus plantarum were estimated in the 15-45 degrees C range and analyzed by Arrhenius and square root models. The cardinal values were 3.94 and 51.7 degrees C for minimum and maximum temperatures, respectively, with activation energy of 43.38 Jmol(-1).
authors.affiliation: Universidad Autónoma Metropolitana, Biotechnology Department, Laboratory of Biopolymers, Av. San Rafael Atlixco, No. 186, Col. Vicentina, C.P. 09340, Mexico City, Mexico.
authors.forename: Neith
authors.initials: N
authors.lastname: Pacheco
authors.forename: Mónica
authors.initials: M
authors.lastname: Garnica-González
authors.forename: Jessica Y
authors.initials: JY
authors.lastname: Ramírez-Hernández
authors.forename: Belem
authors.initials: B
authors.lastname: Flores-Albino
authors.forename: Miquel
authors.initials: M
authors.lastname: Gimeno
authors.forename: Eduardo
authors.initials: E
authors.lastname: Bárzana
authors.forename: Keiko
authors.initials: K
authors.lastname: Shirai
mesh_terms: D000818:Animals; D019149:Bioreactors / Q000382:microbiology*; D002686:Chitin / Q000737:chemistry*; D005516:Food Microbiology; D007220:Industrial Waste / Q000517:prevention & control*; D019344:Lactic Acid / Q000737:chemistry / Q000378:metabolism*; D048191:Lactiplantibacillus plantarum / Q000378:metabolism*; D033561:Penaeidae / Q000382:microbiology*; D012758:Shellfish / Q000382:microbiology*; D013696:Temperature; D018505:Waste Management / Q000379:methods; D024341:Xanthophylls / Q000737:chemistry
chemical_list: D007220:Industrial Waste; D024341:Xanthophylls; D002686:Chitin; D019344:Lactic Acid; C005948:astaxanthine