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Effects of Four Different Washing Agents on Microbial Load, Biochemical Properties, Heavy Metals and Pesticides Residues in Sweet potato leaves (Ipomoea batatas (L.) Lam)


Paper Type 
Contributed Paper
Title 
Effects of Four Different Washing Agents on Microbial Load, Biochemical Properties, Heavy Metals and Pesticides Residues in Sweet potato leaves (Ipomoea batatas (L.) Lam)
Author 
Lim Shu Fang, Kivaandra Dayaa Rao Ramarao, Zuliana Razali and Chandran Somasundram
Email 
chandran@um.edu.my
Abstract:

This study was carried out to evaluate the effects of common household washing agents: (5.25% sodium hypochlorite (Clorox); 5 % acidity apple cider vinegar, and lemon juice) on microbial load, biochemical properties, heavy metals and pesticides residue in Ipomea. batatas leaves. The results showed that Clorox treated samples contained the lowest microbial load (4.67 ± 0.15 log CFU/ml) whereas tap water treated samples retained the highest microbial load at 5.35 ± 0.08 log CFU/ml. For antioxidants analysis, the highest total flavonoid content (TFC) and total polyphenol content (TPC) was recorded in tap water treated samples at 7.068 ± 0.061 mg CE/100 g DW (dry weight) and 46.219 ± 1.106 mg GAE/100 g DW, respectively. There was no significant difference (p > 0.05) in the ascorbic acid content for all treated samples. For all the washing treatments, heavy metal and pesticide residues fell below the concentration limit set by the Malaysian Food Regulation 1985, which makes them safe for consumption.

Start & End Page 
969 - 978
Received Date 
2020-05-12
Revised Date 
2020-12-01
Accepted Date 
2020-12-15
Full Text 
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Correspondence & Author Name 
Keyword 
Ipomoea batatas (L.) Lam, washing agents, microbial load, antioxidants, pesticides, heavy metals
Volume 
Vol.48 No.4 (July 2021)
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