PROCESSING SLIME FROM SNAIL (HELIX ASPERSA MAXIMA): A PRELIMINARY STUDY ON THE EFFECT ON MICROBIAL LOAD
Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry. 2018;19(4):361-374
Journal Title: Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry
ISSN: 1582-540X (Print)
Publisher: Alma Mater Publishing House "Vasile Alecsandri" University of Bacau
Society/Institution: "Vasile Alecsandri" University of Bacau
LCC Subject Category: Technology: Chemical technology
Country of publisher: Romania
Language of fulltext: French, English
Full-text formats available: PDF
AUTHORS
Raquel Teixeira
(Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal)
Joana Barbosa
(Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal)
Helena Albano
(Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal)
Cláudia Maciel
(Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal)
Joana Silva
(Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal)
Jorge A. Saraiva
(Universidade de Aveiro, Departamento de Química, Laboratório de Química Orgânica e Produtos Naturais e Alimentos (QOPNA), Campus Universitário de Santiago, 3810-193 Aveiro, Portugal)
Sónia M. Castro
(1Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal 2Universidade de Aveiro, Departamento de Química, Laboratório de Química Orgânica e Produtos Naturais e Alimentos (QOPNA), Campus Universitário de Santiago, 3810-193 Aveiro, Portugal)
Paula Teixeira
(Universidade Católica Portuguesa, Escola Superior de Biotecnologia, CBQF – Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital 172, 4202-401 Porto, Portugal)
EDITORIAL INFORMATION
Time From Submission to Publication: 6 weeks
Abstract | Full Text
Slime from earth snails (Helix aspersa maxima) is a sub-product often used in the cosmetic industry. Due to its origin, a decontamination process ought to be considered. After exposure to UV radiation, no significant (P > 0.05) reduction of the initial microbial load of slime was observed, while treated at 60 °C, a decrease of 4.0 log CFU∙mL-1 was obtained (when compared to non-treated slime). A similar reduction was attained for pressurized (500 MPa) slime. The sequential combination of temperature and pressure treatment had a similar effect (P > 0.05) on the microbial load when compared to 400 MPa (30 min), but the reduction was higher when compared to the less intense treatments (60 °C, 15 min; 400 MPa, 15 min). Overall, the results suggest that pressure ( 400 MPa) is a promising technology for processing snail slime, which can have positive effects on its microbial load, for further use in the cosmetic industry.