Preparation and antioxidant properties of crayfish (Procambarus clarkii) By-products protein hydrolysates and ultra filtration fractions.
Pak J Pharm Sci
; 32(5(Special)): 2391-2397, 2019 Sep.
Article
em En
| MEDLINE
| ID: mdl-31894023
ABSTRACT
Protein isolate from crayfish by-products (CBPI) were hydrolyzed using Alcalase, neutrase, pancreatin and bromelain. Hydrolysis by Alcalase had more remarkable digesting efficiency on crayfish by-products protein than that by the other enzymes. Therefore, protein hydrolysate from Alcalase digestion (CBPHa) was selected to be fractionated by ultrafiltration according to molecular weight into three fractions F1 (MW <1kDa), F2 (MW 1-3kDa) and F3 (MW 3-10kDa). The amino acid determination revealed that CBPI had essential amino acid (EAA) close to that required for human protein synthesis. In vitro activity experiments showed that CBPHa and its fractions possessed considerable antioxidant activity. F1 exhibited the highest DPPH, superoxide radicals scavenging activities and Fe2+ chelating ability, whereas F2 showed the best hydroxyl radicals scavenging capacity and reducing power. In addition, all the fractions showed higher super oxide radical scavenging activity than the crude hydrolysates. Our findings suggest that CBPHa and their ultra filtration fractions have the potential for use in nutraceutical and functional food industries to maximize the use of crayfish processing by-products.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hidrolisados de Proteína
/
Sequestradores de Radicais Livres
/
Astacoidea
/
Antioxidantes
Limite:
Animals
Idioma:
En
Revista:
Pak J Pharm Sci
Assunto da revista:
FARMACIA
/
FARMACOLOGIA
/
QUIMICA
Ano de publicação:
2019
Tipo de documento:
Article
País de publicação:
PAKISTAN
/
PAQUISTÃO
/
PK