کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5769178 1628516 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Citric acid as alternative to sodium hypochlorite for washing and disinfection of experimentally-infected spinach leaves
ترجمه فارسی عنوان
اسید سیتریک به عنوان جایگزین هیپوکلریت سدیم برای شستن و ضد عفونی برگ های اسفناج آلوده به آزمایش
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
چکیده انگلیسی


- Temperature before disinfection is crucial to guarantee citric acid effectiveness.
- Citric acid performed better than control treatment in assuring safety along storage.
- Citric acid 0.5% did not affect sensory quality of spinach along storage at 6.5 °C.
- Citric acid 0.5% constitutes an alternative disinfection method for spinach leaves.

This research aims to investigate citric acid (CA) 0.5% as alternative to sodium hypochlorite (SH) 200 ppm for washing and disinfecting spinach leaves (Spinacia oleracea L.). The initial disinfection achieved in leaves spot-inoculated with Escherichia coli and Listeria innocua, pathogen surrogates, was investigated along with the effects of time and temperature conditions before processing on the performance of CA and SH. Next, the effectiveness of CA and SH was evaluated throughout refrigerated storage (6.5 °C, 9 days) at a low and high contamination load, 5-6 and 8-9 log CFU.g−1, respectively. And lastly, sensory impact was assessed through a trained panel and instrumental color. Results indicated that there were not significant differences between the initial disinfection achieved by CA and SH. Storing infected spinach under refrigeration, between harvest and processing, played a key role not only in reducing their deterioration but also in assuring their safety by maintaining CA and SH effectiveness against the inoculated surrogates. Citric acid performance was better in controlling surrogates' regrowth along refrigerated storage. And there were not significant differences between CA and SH treated samples with respect to their sensory quality. Therefore, CA could constitute an alternative washing and disinfection method for spinach leaves.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: LWT - Food Science and Technology - Volume 82, 1 September 2017, Pages 318-325
نویسندگان
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