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:: Volume 23, Issue 3 (10-2014) ::
isfj 2014, 23(3): 109-118 Back to browse issues page
The effects of Zataria multiflora on inhibition of polyphenoloxidase and melanosis formation in shrimp (Litopenaeus vannamei
E. Nasiri , M. Moosavi-Nasab * 1, S. S. Shekarforoush , M. T. Golmakani
Abstract:   (9512 Views)
Shrimp melanosis (black spot) is an important surface discoloration caused by polyphenol oxidase (tyrosinase) enzyme, which oxidizes phenols and leads to insoluble black pigments, the melanins. Sulphiting agents are widely used as melanosis inhibitors but, the hazards related to sulphated foods, such as allergic reactions and severe disorders in asthmatic patients have created a necessity to find the effective natural alternatives. The current study was accomplished to assay the in vitro antityrosinase effect of Z. multiflora EO as well as its capability to retard the melanosis formation in shrimp during iced storage. According to GC/MS results, carvacrol, thymol and p-cymene were the major components of Z.multiflora EO, representing 50.8, 14.4 and 10.6, respectively. DPPH radical scavenging activity of EO was 0.8±0.02 mg/ml and 63.2% of tyrosinase activity decreased when EO with a concentration of 0.25% was applied. Furthermore, it has been observed that immersing the shrimps in 1% EO aqueous suspension retarded the melanosis formation in shrimp during 10 days of iced storage. It can be concluded that Z. multiflora EO could be used as an effective natural processing aid to increase the shrimp shelf-life during iced storage.
Keywords: Melanosis, Pacific white shrimp, Tyrosinase, Zataria multiflora Boiss
Full-Text [PDF 631 kb]   (4019 Downloads)    
Type of Study: Research | Subject: بيوتكنولوژي و فرآوري هاي شيلاتي
Received: 2015/02/23 | Accepted: 2015/02/23 | Published: 2015/02/23
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Nasiri E, Moosavi-Nasab M, Shekarforoush S S, Golmakani M T. The effects of Zataria multiflora on inhibition of polyphenoloxidase and melanosis formation in shrimp (Litopenaeus vannamei. isfj 2014; 23 (3) :109-118
URL: http://isfj.ir/article-1-1283-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 23, Issue 3 (10-2014) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

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