مقدمه و هدف: پاغازه و والک سوری دو گیاه بومی ایران هستند که کمتر مورد توجه قرار گرفته اند. ظرفیت بالای آنتی‌اکسیدانی آنها در کنار مصارف خوراکی سبب می‌شود تا از آنها بتوان در بسیاری از مواد غذایی استفاده کرد. مطالعه حاضر به منظور شناسایی ترکیبات شیمیایی و بررسی خصوصیات آنتی اکسیدانی عصاره گیاهان پاغازه و والک سوری در روغن سویا انجام شد. روش تحقیق: پس از جمع آوری و خشک کردن گیاهان، عصاره هیدروالکی آنها استخراج شد. عصاره گیاهان با استفاده از دستگاه GC-MSبه منظور شناسایی ترکیبات شیمیایی مورد استفاده قرار گرفت. درصد به دم اندازی رادیکال های آزاد DPPH و میزان ترکیبات فنولی کل در هر کدام از عصاره‌ها مورد ارزیابی قرار گرفت. سپس عصاره‌های گیاهی با غلظت های200، 600 و 1000 ppm به روغن سویا افزوده شده و شاخص‌هایی همچون اندیس‌ پراکسید، تیوباربیتوریک اسید، دی ان و تری ان‌های مزدوج و عدد اسیدی پس از حرارت دهی در دمای 120 درجه سانتیگراد مورد ازیابی قرار گرفتند. نتایج و بحث: تیمول در عصاره والک سوری و استیل تیمول در عصاره پاغازه به عنوان فراوان‌ترین ترکیبات شیمیایی شناسایی شدند. مشخص شد که درصد به دام اندازی DPPH در هر دو نوع عصاره با افزایش غلظت، افزایش پیدا کرد. درصد به دام اندازی در عصاره گیاه پاغازه بیشتر از والک سوری بود. میزان ترکیبات فنولی کل موجود در عصاره گیاهان پاغازه و والک سوری به ترتیب 12/70 و 32/40 میلی گرم گالیک اسید در هر گرم عصاره بود. میزان اسیدیته روغن سویا در طی 3 روز حرارت دهی در 120 درجه سانتیگراد در تمامی تیمارها افزایش پیدا کرد و در تیمار حاوی عصاره والک سوری بیشتر بود. میزان دی‌ان و تری‌ان‌های مزدوج، اندیس تیوباربیتوریک اسید و پراکسید در روزهای مختلف در روغن حاوی عصاره گیاه پاغازه به مراتب کمتر از والک سوری بود. توصیه کاربردی/صنعتی: کاربرد عصاره پاغازه به عنوان یک ترکیب طبیعی در مواد غذایی حاوی روغن و چربی، به جهت اثرات آنتی اکسیدانی بالا و به تعویق انداختن فساد اکسیداتیو پیشنهاد می‌گردد. Manuscript profile

Background & Aim: The use of herbs in traditional medicine to treatment of diseases and other purposes in the food industry and cosmetics has since long been considered. Considering thatHeracleum lasiopetalum, Thymus carmanicus and Myrtus communis have many health benefits therefore this research were performed to investigate the chemical composition of essential oils from these plants. Experimental: The essential oil from the fruits of H. lasiopetalum, aerial parts of T. carmanicus and leaves of M. communis were extracted using a Clevenger-type apparatus and analyzed by GC/MS. Also content of the extracted essential oils were calculated. Results & Discussion: Results indicated the amount of essential oils of H. lasiopetalum, T. carmanicus M. communis were significant and they had volatile. The main constituents of essential oils were hydrocarbons, aldehydes, ketones, alcohols, phenols, ethers with phenolic and terpenes origin. Recommended applications/industries: Due to the health benefits and antioxidant compounds found in the essential oils of these plants are examined in vitro and in food. Manuscript profile

Background & Aim: Considering the inevitable side effects of chemical drugs, nowadays, herbal medicine has gained a special importance. Cinnamon of Lauraceae Family, is commonly used as a food spice and medicine. It is famous to be, antimicrobial, anti-oxidant, anti-diabetic, anti-viral, and antispastic. It also prevents abdominal bloating, increases sweating and uterus muscle constrictions. Cinnamon’s essence is known to have anti-fungal and antibacterial effects, which most presumably reflects the presence of ortho methoxy cinnamic aldehyde components in it (OR which is due to the presence of ortho methoxy cinnamic aldehyde components). Cinnamon extracts contain eugenol compounds which characterizes the fibrinolytic effects of it.Furthermore, Cinemon and its derivatives can also influence the central nervous system and alleviate the pain. Additionally, cinnamon compounds can influence insulin effects and reduce the insulin resistance and consequently result in positive effects on blood sugar level. One of its most important effects is the effect on increased sexual drive. Direct or indirect effect of cinemon compounds in increasing hormonal production and release could well be due to increase of nitric acid synthesis. It also contains volatile and non-volatile non-phenolic ingredients that most probably bring about its anti-oxidant effects. Recommended applications/industries: Considering the mentioned effects of cinnamon and its extracts and additional ease of extraction and its cost effectiveness, it can be easily used in pharmaceutical and food industries. In food industry, it's anti-microbial and anti-oxidants effects and even for packaging strategies as a natural conservator cinnamon can be an effective candidate. Manuscript profile

Introduction: Active packaging is one of the innovations in food packaging industry that would be a respons to the changing needs of consumers and markets. In this technique, materials such as adsorbents oxygen, moisture, carbon dioxide, ethylene and carbon dioxide-releasing flavor compounds, antimicrobials, antioxidants and various aromatic compounds are used. In the last decade, great attention are paid to application of antimicrobial compounds for food packaging and food contact surfaces, the plant essential oils are one of the active constituents in this area. In this article, different kinds of plant essential oils, constituents, antimicrobial properties, mutagenicity and anti-mutation effect of these compounds and their use in food packaging and its impact on the physicochemical properties of packaging and food packaging are discussed. Results: Plant essential oils and its compounds such as linalool, thymol, cinnamaldehyde, vanillin, carvacrol, and many other compounds because of their characteristics such as anti-microbial, anti-fungal and anti-oxidant activity are acceptable for using in the food industry and increasing shelf life of corruptible materials. Nowadays, many studies have shown that most of these substances are not harmful to human health; therefore, has found considerable acceptability in industry and among consumers. Conclusion: Antimicrobial packaging is a type of active packaging that is effective on shelf life, health and food safety. Various materials such as plant essential oils are used in this type of packaging which increase the shelf life and product quality. However, the safety of these compounds before using in industry must be determined. Manuscript profile

Background & Aim: Chemicals antioxidants and lipid oxidation products are known as cancer-causing factors in food systems. In this study, the effect of essential oil from Heracleum lasiopetalum fruits on lipid oxidation and physicochemical properties of potato chips in comparison with commercial antioxidant has been investigated. Experimental: The essential oil of H. lasiopetalum extracted using a Clevenger-type apparatus, and analyzed by GC/MS. The essential oil was added to the frying oil of potato chips in concentration level 3000 ppm, and its antioxidant effect on produced chips was analyzed by peroxide value, TBA and acidity of the essential oils from potato chips. BHA and TBHQ were added as the commercial antioxidant in 200 ppm and antioxidant reduction evaluated in 45 days period. Results & Discussion: Results indicated the essential oil of H. lasiopetalum fruits could reduce oxidation of potato chips the same as synthetic antioxidants. TBA test indicated the essential oil of H. lasiopetalum is higher effective than BHA in reduction of the primary TBA reaction but TBHQ is the lowest. Recommended applications/industries: The essential oil of H. lasiopetalum had antioxidant effect which it can use as natural antioxidant in foods during storage. Manuscript profile