تأثیر روش‌های مختلف خشک‌کردن بر سینتیک خشک شدن، مدلسازی ریاضی، کمیت و کیفیت اسانس آویشن

نویسندگان
حامد کرمی 1
علی نجات لرستانی 2
رضا تحویلیان 3
1 دانش آموخته کارشناسی ارشد، گروه مهندسی مکانیک بیوسیستم، دانشگاه رازی
2 دانشیار دانشگاه رازی
3 دانشیار، گروه فارماسیوتیکس، دانشکده داروسازی، دانشگاه علوم پزشکی کرمانشاه
10.52547/fsct.18.113.135
چکیده
فرایند خشک کردن نقش مهمی در کمیت و کیفیت اسانس به‌دست آمده از گیاه دارد. گیاهان دارویی اسانس‌دار اگر بلافاصله خشک نشوند و یا اسانس آن‌ها استخراج نشود مواد موثره و ترکیبات فرارشان را از دست می‌دهند. هدف از این پژوهش طراحی و ساخت خشک کن هیبریدی برای گیاهان دارویی و مقایسه آن با دو روش مختلف خشک کردن آویشن (خشک کردن سنتی و خشک کردن در آون) می‌باشد. در این پژوهش اثر روش های مختلف خشک کردن (خشک کردن هیبریدی، آون و روش سنتی) بر میزان اسانس و نوع و درصد اجزای تشکیل دهنده آویشن، مورد بررسی قرار گرفت. سپس اسانس از تمامی اندام های آویشن در سه تکرار به وسیله روش تقطیر با آب استخراج و اجزای شیمیایی به وسیله دستگاه‌هایGC و GC/MSمورد تجزیه و شناسایی قرار گرفت. نتایج مدلسازی ریاضی نشان داد که مدل میدلی میتواند با دقت بالایی منحنی‌های خشک کردن آویشن را برازش نماید. بالاترین مقدار اسانس استخراج شده به روش تقطیر با آب برابر 4/2٪ (v/w) توسط خشک کن هیبریدی بدست آمد. خشک کن هیبریدی 24 نوع ترکیبات فرار آویشن را حفظ می کند در حالی که این مقادیر به ترتیب 10 و 6 برای روش های آون و سایه بود. اجزای اصلی اسانس در روش های مختلف خشک کردن؛ آلفا و بتا پینن، کاریوفیلن، اکسید کاریوفیلن، کاروتول، تیمول، متیل اتر تیمول، ترپینن-4-اُل، گاما-ترپینن، پ-سیمن بود. به طور کلی روش خشک کردن هیبریدی به عنوان بهترین روش برای فرآوری پس از برداشت آویشن پیشنهاد می‌شود.
کلیدواژه‌ها
اسانس
آویشن
روش های خشک کردن
خشک‌کن هیبریدی
GC/MS

موضوعات

عنوان مقاله English

The Effect of Different Drying Methods on Drying Kinetics, Mathematical Modeling, Quantity and Quality of Thyme Essential Oil

نویسندگان English

Hamed Karami 1
Ali Nejat Lorestani 2
reza tahvilian 3
1 Graduated MSc, Department of Mechanical Engineering of Biosystems, Razi University
2 Associate Professor of Razi University
3 Associate Professor, Department of Pharmaceutics, Novel Drug Delivery Research Center, Students Research Committee School of Pharmacy, Kermanshah University of Medical Sciences (KUMS) Kermanshah
چکیده English

The drying process plays an important role in the treatment of medicinal plants, in order to maintain the quantity and quality of the essential oil extracted from the plant. Because Medicinal herbs containing essential oils If they are not dried immediately or their essence is not extracted, they will lose their active ingredients and volatile compounds.The aim of this study is design a hybrid dryer to drying medicinal plants and comparison their results with traditional drying methods (sun and shade).The effects of different drying methods (hybrid dryer, oven and shade drying) on the essential oil content and chemical composition of thyme were studied. The essential oils from each organ type were extracted by hydrodistillation and the chemical components were analyzed by GC/MS systems. Mathematical modeling results showed that the Midilli model can fit the drying curves with high accuracy. The highest essential oils yield of 2.4 % (v/w) was obtained by a hybrid dryer. Results indicated that hybrid dryer could keep the 24 Kinds of volatile compounds of Thymus while these values were 10 and 6 for oven and shadow methods, respectively. The main components of the essential oils in different drying methods were including alpha and beta pinene, caryophyllene, caryophyllene oxide, carotol, thymol, thymol methyl ether, terpinene-4-ol, gama-terpinene, p-cymene.In general, hybrid drying method is recommended as the best method for post-harvest thyme processing.

کلیدواژه‌ها English

Drying Methods
Essential oils
GC/MS
Hybrid Dryer
Thyme
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