scholarly journals Changes in chemical composition and biological activity of essential oil from Thomson navel orange ( Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

2019 ◽  
Vol 8 (1) ◽  
pp. 124-138 ◽  
Author(s):  
Reza Farahmandfar ◽  
Behraad Tirgarian ◽  
Bahare Dehghan ◽  
Azeeta Nemati
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Citrus Sinensis ◽  
Microwave Drying ◽  
Drying Methods ◽  
Navel Orange

scholarly journals Differences in the Aroma Profile of Chamomile (Matricaria chamomilla L.) after Different Drying Conditions

2021 ◽  
Vol 13 (9) ◽  
pp. 5083
Author(s):  
Ahmed Mahmoud Abbas ◽  
Mohamed Abdelmoneim Seddik ◽  
Abd-Allah Gahory ◽  
Sabri Salaheldin ◽  
Wagdi Saber Soliman
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Microwave Drying ◽  
Drying Methods ◽  
Solar Drying ◽  
Matricaria Chamomilla ◽  
Aroma Profile ◽  
Dry Biomass ◽  
Drying Conditions ◽  
Chamomile Flower

This experiment was conducted to examine the influence of drying methods on the essential oil of chamomile (Matricaria chamomilla L.) and its chemical composition. Chamomile flower heads were dried using five different methods: sunlight for 72 h; shade for 1 week; oven at 40 °C for 72 h; solar dryer for 72 h; and microwave for 5 min. Drying methods had slight and nonsignificant impacts on dry biomass of flower heads. The highest percentages of oil in flowers (0.35–0.50%) were observed after solar-drying methods, and the lowest percentage of oil was found after microwave drying (0.24–0.33%). Drying methods significantly influenced the number of identified compounds. The maximum was identified after solar drying (21 compounds), while the lowest was identified after microwave drying (13 compounds), which revealed the solar ability to preserve compounds in contrast to microwave, which crushed the compounds. Major compounds were α-bisabolol oxide A (33.0–50.5%), (Z)-tonghaosu (10.0–18.7%), α-bisabolol oxide B (8.2–15.4%), α-bisabolone oxide A (5.4–14.6%), and chamazulene (1.9–5.2%) of essential oil. Drying methods clearly affected major compounds’ content as the lowest α-bisabolol oxide A was after sun drying, and the lowest α-bisabolol oxide B was after solar drying. (Z)-tonghaosu increased during drying compared to fresh flowers. Solar drying maintained higher chamazulene content (3.0%) compared to other drying methods. The results of this study suggest that drying under the shady conditions preserved chemical composition of essential oil with higher α-bisabolol content compared to other drying methods.

scholarly journals Effect of Drying Methods on the Chemical Composition and Biological Activity of Parsley Herb Essential Oil

2020 ◽  
Vol 23 (6) ◽  
pp. 839-847 ◽  
Author(s):  
Adel Zaki Mohamed Ba ◽  
Nadia Abd El Rhaman Sal ◽  
Menna Allah Kamal Isma
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Drying Methods

STUDY OF CORIANDER SEED OIL (Coriandrum sativum L.)

2010 ◽  
Vol 13 (3) ◽  
pp. 29-38
Author(s):  
Ha Bich Phan ◽  
Thach Ngoc Le
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Seed Oil ◽  
Coriandrum Sativum ◽  
Conventional Heating ◽  
Geranyl Acetate ◽  
Physical And Chemical ◽  
Coriander Seed Oil ◽  
Coriander Seed

Coriandrum sativum L. belongs to the Apiaceae family, which is cultivated in Dong Nai province, in this paper its seed oil of was studied. The essential oil was extracted by hydrodistillation. We used two methods for activating of hydrodistillation: conventional heating and microwave irradiating. Its physical and chemical indexes were measured. The chemical composition of this oil was identified by GC/MS and quantified by GC/FID. Linalool (75.51-77.21 %), and geranyl acetate (15.64-12.79 %) were the main constituents of the oil which were obtained in 0,32-0.39 % yield. The biological activity of this oil was reported.

Chemical Composition and Biological Activity of the Essential Oil and Solvent Extracts of

2017 ◽  
Vol 04 (1) ◽  
pp. 43-49
Author(s):  
Amir Reza Jassbi ◽  
Mehdi Zare ◽  
Fatemeh Heidary Jamebozorgi
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil

Effect of drying methods on yield, chemical composition and bioactivities of essential oil obtained from Moroccan Mentha pulegium L.

2018 ◽  
Vol 16 ◽  
pp. 638-643 ◽  
Author(s):  
Aljaiyash Ahmed ◽  
Kasrati Ayoub ◽  
Alaoui Jamali Chaima ◽  
Labiad Hanaa ◽  
Chaouch Abdelaziz
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Drying Methods ◽  
Mentha Pulegium
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