Extraction of Squid (Photololigo Duvaucelii) Myofibrillar and Sarcoplasmic Proteins to Create A Skin Prick Test Reagent In The Diagnosis of Food Allergy
Journal Title: IOSR Journal of Pharmacy (IOSRPHR) - Year 2014, Vol 4, Issue 9
Abstract
The major and minor allergens in fish and shellfish that have been identified are broadly spread in the myofibrillar and sarcoplasmic proteins. This study aimed to create the SPT reagents of squid myofibrillar and sarcoplasmic proteins to improve sensitivity and specificity diagnosis. Myofibrillar protein fraction was composed of 11 protein bands with the molecular weights of 18.2-108.4 kDa and sarcoplasmic protein fraction was composed of 13 protein bands with the molecular weights of 9.5-119.3 kDa. The allergenic myofibrillar protein has the molecular weights of 8.9-122.7 kDa while the allergenic sarcoplasmic protein has the molecular weights of 11.8-143.9 kDa. Each allergen extract was formulated into a SPT reagent met the requirements of the European Pharmacopoeia Monograph on Allergen Products 7 (2010:1063) for the parameters of moisture content, protein content, sterility and microbiology. A SPT to the respondents indicated that the sensitivity value of squid myofibrillar reagent was 86% and squid sarcoplasmic reagent was 64% with a negative error rate for each myofibrillar and sarcoplasmic reagents was 14% and 36%, respectively. The result diagnosis of squid myofibrillar and sarcoplasmic would generate sensitivity value at 100%. The separation of squid proteins into myofibrils and sarcoplasm for SPT could improve its sensitivity value and lowered the negative misdiagnosis. The specificity of each myofibrillar and sarcoplasmic proteins was 100% with an error rate of positive diagnosis occurrence at 0%.
Authors and Affiliations
Hendra Wijaya1 , Fransiska Rungkat Zakaria2 , Dahrul Syah2 , Endang Prangdimurti2
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