Đánh giá chỉ tiêu an toàn tổng số chất bay hơi thôi nhiễm trong hộp xốp đựng thực phẩm tại Thành phố Hồ Chí Minh

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Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Kiểm nghiệm và An toàn thực phẩm, 2022

Mô tả vật lý: tr.196-206

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ID: 333542

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Disposable plastic utensils such as plastic boxes and foam boxes are becoming more and more popular with significant output in Vietnam. These products are mainly made from polystyrene, which should be strictly controlled to reduce the risk of food insecurity, due to the leaching of certain substances into food. Therefore, conducting a study to determine the toxic substances remaining in the styrofoam box is necessary, with objective is to determine the percentage of foam food container products with total volatiles (through the determination of substances: styrene, ethylbenzene, toluene, n-propylbenzene) exceeding the allowable limit according to QCVN 12-1:2011/BYT. The study conducted on 138 samples of foam boxes randomly collected at 46 markets in 23 districts in Ho Chi Minh City, with analytical method being GC-MS technical method for the determination of volatile compounds from foam boxes. Results showed that all 138 foam samples had amount of each styrene, ethylbenzene below 1 mg/g, total styrene and ethylbenzene less than 1 mg/g, total volatiles (styrene, toluene, ethylbenzene, n-propylbenzene) are all below 5 mg/g. Conclusion: There should be stricter control regulations on the quality of disposable food containers and the use of foam boxes should be limited to reduce the impact on the environment.Sản phẩm bằng nhựa dùng một lần như hộp nhựa, hộp xốp ngày càng trở nên phổ biến tại Việt Nam. Những sản phẩm này chủ yếu được sản xuất từ polystyrene, cần được kiểm soát chặt chẽ nhằm giảm nguy cơ mất an toàn thực phẩm, do gây thôi nhiễm một số chất vào thực phẩm. Do đó, tiến hành một nghiên cứu nhằm xác định các chất độc hại tồn dư trong hộp xốp là cần thiết, với mục tiêu nhằm xác định tỷ lệ các sản phẩm hộp xốp đựng thực phẩm có hàm lượng tổng số chất bay hơi (thông qua việc xác định các chất: styrene, ethylbenzene, toluene, n-propylbenzene) vượt mức cho phép theo QCVN 12-1:2011/BYT. Đối tượng và phương pháp: Thực hiện trên 138 mẫu hộp xốp được lấy ngẫu nhiên tại 46 chợ thuộc 23 quận, huyện trên địa bàn Thành phố Hồ Chí Minh, với phương pháp kỹ thuật GC-MS để xác định các hợp chất bay hơi từ hộp xốp. Kết quả cho thấy, tất cả 138 mẫu hộp xốp có hàm lượng từng chất styrene, ethylbenzene đều dưới 1 mg/g, tổng hàm lượng styrene và ethylbenzene thấp hơn 1 mg/g, tổng hàm lượng các chất bay hơi (styrene, toluen, ethylbenzene, n-propylbenzene) đều dưới 5 mg/g. Kết luận: Cần có những quy định kiểm soát chặt chẽ hơn về chất lượng hộp xốp chứa đựng thực phẩm dùng một lần và cần hạn chế sử dụng hộp xốp để giảm bớt tác động đến môi trường.

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