نوع مقاله : اصیل پژوهشی
نویسندگان
1 گروه بهداشت مواد غذایی، دانشکده دامپزشکی، دانشگاه آزاد اسلامی واحد کرج، کرج، ایران.
2 دانشجوی دکتری دامپزشکی، دانشکده دامپزشکی، دانشگاه تهران، تهران، ایران.
3 دانشجوی دکتری تخصصی بهداشت مواد غذایی، دانشکده دامپزشکی، دانشگاه تهران، تهران، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
Today, application of natural antimicrobial films as an inhibitors of growth of dangerous microbes especially in food staffs have been increased. The present study was carried out in order to study the antimicrobial activity of chitosan films containing 1–4% (v ⁄ v) Lavandula stoechas essential oil (EO) on some food-borne pathogenic bacteria (Listeria monocytogenes, Bacillus cereus, Vibrio parahaemolyticus, Staphylococcus aureus and Escherichia coli O157:H7). At first, the essential oil of the Lavandula stoechas herb was prepared. The most essential components are 1,8 cineol (16/49%), borneol (75/10%), camphor (94/8%) and linalool L (95/3%) and alfa-pinene (2/3 %).Then Circular discs of chitosan films containing different concentration of Lavandula stoechas essential oil were placed on bacterial lawn. Chitosan films incorporated with 4% (v ⁄ v) of EO inhibited the growth of all tested pathogenic bacteria. Incorporation of Chitosan film with EO showed significant antimicrobial effects (P < 0.05). Transparency of film was reduced by increasing of EO. These results showed that Chitosan films containing Lavandula stoechas EO have good effect for packaging some foods.
کلیدواژهها [English]