Evaluation of the effects of peppermint essential oil (Mentha piperita) on oxidative stability of soybean oil

Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background and objective

The synthetic antioxidants, which have many side effects on human health, are commonly used to control the oxidative stability of oils. So today, researches on essential oil of herbal plant as a safe alternative method are in progress. The aim of this study was application of essential oil of peppermint (PMEOs) herbalplant (as a natural antioxidant) to improve the oxidative stability of soybean oil.

Materials and methods

In this study, the quality properties of soybean oil were evaluated after the addition of natural antioxidant of peppermint essential oil (Mentha piperita) with peroxide index, induction period, acidic number, thyobarbituric acid index and oxidative stability index during storage period (for 45 days). For this purpose, by using the response surface method (RSM), the optimum concentration of essential oil was determined with respect to the peroxide index and the induction period factors (by the accelerated shelf life test at 60oC). Then, PMEOs antioxidant was added to soybean oil at optimum concentration and the noted quality properties were compared during the storage period with the blank sample. Also, obtained results from this study were repeated with a sample of soybean oil containing BHT synthetic antioxidant. Moreover, in this research, the factorial experiment in a completely randomizes design was used to analyse the data of the storage stage. Mean comparison of data was carried out by least significant difference test (LSD) in confidence level of 99%.

Results

Gas chromatography-mass spectroscopy (GC-MS) test was used to confirm of the PMEOs. Based on the results, totally 37 components were identified in essential oil of this herbal plant. The main components of the essential oil of this herb plant include iso-Menthol (34.58%), Menthol (29.81%), 1,8-Cineole (5.93%), Menthofuran (4.49%), iso-Menthone (3.51%), Menthol (3.4%), cis-Sabinene hydrate (2.31%) and D-Limonene (1.81%). The results of this research indicated that variation trend of peroxide index, acidic number and tiobarbitoric acid index increased during storage from 1st to 45th day, whereas the induction period of soybean oil showed a decreasing trend. Also, the result of this research indicated that blended of PMEOs (or BHT) could be reduce peroxide index, acidic number and tiobarbitoric acid index than blank sample to 37.57% (35.49%), 54.24% (48.3%) and 15.45% (2.44%) during 45 day storage. Furthermore, the PMEOs (or BHT) than blank sample increased induction period to 13.53% (37.44%) during 45 day storage.

Conclusion

Generally, the results of this study showed that PMEOs (with concentration of 871 ppm) as a natural antioxidant could be improve the quality properties of soybean oil.

Language:
Persian
Published:
Electronic Journal of Food Processing and Preservation, Volume:12 Issue: 1, 2020
Pages:
81 to 94
magiran.com/p2199796  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 1,390,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!