Abstract
Background and Aim:Extending the shelf life of foods is an essential concept in food safety. Most of the time, foods deteriorate through the growth of microorganisms or oxidation process. Essential oils (EOs) derived from plant material have well-documented antioxidant and antibacterial activity. This study aimed to evaluate the effect of Zataria multiflora Boiss EO (ZEO) and Mentha piperita EO (MEO) on the chemical stability of minced meat during storage at 7°C.Materials and Methods:Total phenolic content, β-Carotene bleaching test, ferric reducing antioxidant potential assay, and 2,2-Diphenyl-1-picrylhydrazyl radical scavenging activity were used to determine the antioxidant potential of EOs. Five different groups including control, ZEO 0.3%, ZEO 0.5%, MEO 0.3%, and MEO 0.5% were designed to assess the chemical stability of minced meat by measuring pH, thiobarbituric acid (TBA), total volatile base nitrogen (TVBN), and peroxide value (PV).Results:pH did not have any significant change during storage. TBA values in the control group were significantly higher than the treatment groups, especially from the 5th day of storage. TVBN in the treatment group was significantly lower than the control group during storage. PV values in the treatment group were significantly lower than the control group during storage.Conclusion:Results indicate that ZEO and MEO had an excellent antioxidant activity and retarded the spoilage process in minced meat.
Highlights
Food spoilage which is mainly caused by the oxidation process and growth of microorganisms during storage and marketing is one of the most important aspects of food safety and extending the shelf life of food [1,2]
Results indicate that Zataria multiflora Boiss EO (ZEO) and Mentha piperita EO (MEO) had an excellent antioxidant activity and retarded the spoilage process in minced meat
BCB, reducing, and chelating power of ZEO were 88.24±0.23, 19.42±0.13, and 88.13±4.08, respectively, which were higher than M. piperita (71.33±0.21, 16.71±0.12, and 69.48±3.90) Essential oils (EOs)
Summary
Food spoilage which is mainly caused by the oxidation process and growth of microorganisms during storage and marketing is one of the most important aspects of food safety and extending the shelf life of food [1,2]. In the food industry to extend the shelf life of food, some chemical additives such as butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), and propyl gallate are usually mixed with foods having a high-fat content [3]. Due to growing concerns of consumers about the teratogenic or carcinogenic effects of chemical additives in foods, use of natural compounds such as essential oils (EOs) bear in mind [1,4,5]. Extending the shelf life of foods is an essential concept in food safety. This study aimed to evaluate the effect of Zataria multiflora Boiss EO (ZEO) and Mentha piperita EO (MEO) on the chemical stability of minced meat during storage at 7°C
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