TY - JOUR
T1 - Yield and in vitro antioxidant potential of essential oil from aerva javanica (Burm. f.) juss. ex schul. flower with special emphasis on seasonal changes
AU - Shahin, Suzan Marwan
AU - Jaleel, Abdul
AU - Alyafei, Mohammed Abdul Muhsen
N1 - Funding Information:
This research was funded by UAEU fund No. 31F029. We express our appreciation to Ali El-Keblawy (University of Sharjah) and Shyam Kurup for the valuable knowledge related to the UAE native plants. Senthilkumar Annadurai (Research Associate, CAVM, UAEU) for his great support in the GC-MS analysis. Ali Al Marzouqi (Dean, College of Graduate Studies, UAEU) for sharing his valuable knowledge related to EO. Saeed Tariq (College of Medicine and Health Sciences, UAEU) for his assistance on SEM. Sajid Maqsood, Hina Kamal, and Babucarr Jobe (late) (Department of Nutrition, CAVM, UAEU), for the valuable assistance in conducting the antioxidant tests. Arshed el Daley (Agriculture Engineer, Al Foah Experimental Farm, CAVM), Abou-Messallam Azab (Lab Specialist, Horticulture Lab, CAVM), Saad Ismail (Lab Specialist, Soil and Water Lab, CAVM) and Rahaf Ajaj (Abu Dhabi University) for their cooperation and continuous support. This research was supported by the United Arab Emirates University (UAEU), College of Food and Agriculture, fund No. 31F029.
Funding Information:
Acknowledgments: We express our appreciation to Ali El-Keblawy (University of Sharjah) and Shyam Kurup for the valuable knowledge related to the UAE native plants. Senthilkumar Annadurai (Research Associate, CAVM, UAEU) for his great support in the GC-MS analysis. Ali Al Marzouqi (Dean, College of Graduate Studies, UAEU) for sharing his valuable knowledge related to EO. Saeed Tariq (College of Medicine and Health Sciences, UAEU) for his assistance on SEM. Sajid Maqsood, Hina Kamal, and Babucarr Jobe (late) (Department of Nutrition, CAVM, UAEU), for the valuable assistance in conducting the antioxidant tests. Arshed el Daley (Agriculture Engineer, Al Foah Experimental Farm, CAVM), Abou-Messallam Azab (Lab Specialist, Horticulture Lab, CAVM), Saad Ismail (Lab Specialist, Soil and Water Lab, CAVM) and Rahaf Ajaj (Abu Dhabi University) for their cooperation and continuous support. This research was supported by the United Arab Emirates University (UAEU), College of Food and Agriculture, fund No. 31F029.
Funding Information:
Funding: This research was funded by UAEU fund No. 31F029.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/12
Y1 - 2021/12
N2 - The essential oil (EO) of the desert cotton (Aerva javanica (Burm. f.) Juss. ex Schul.) was extracted by hydrodistillation, from A. javanica flowers growing in the sandy soils of the United Arab Emirates (UAE) wild desert. The influence of seasonal variation on flowers’ EO yield was studied. The flowers’ EO yield obtained from spring samples (0.011%) was significantly the highest followed by early summer (0.009%), winter (0.007%), and autumn samples (0.006%), respectively. The flowers’ EO antioxidant analysis were tested by DPPH, FRAP and ABTS assays (in vitro). Results proved that A. javanica flowers’ EO, isolated during the four seasons, is a good source of natural bioactive antioxidants. Based on the three tested assays, the highest antioxidant activity was recorded in the spring. Testing of the chemical composition of the flowers’ EO was conducted for the season with the highest yield and the best antioxidant performance, recorded in spring, by a combination of gas chromatograph (GC) and gas chromatograph-mass spectrometer (GC-MS). This led to the identification of 29 volatile components, in which the flowers’ oil was characterized by angustione as a major compound. Photos by scanning electron microscope (SEM) showed prominent availability of star-shaped trichomes in the epidermis of the flowers.
AB - The essential oil (EO) of the desert cotton (Aerva javanica (Burm. f.) Juss. ex Schul.) was extracted by hydrodistillation, from A. javanica flowers growing in the sandy soils of the United Arab Emirates (UAE) wild desert. The influence of seasonal variation on flowers’ EO yield was studied. The flowers’ EO yield obtained from spring samples (0.011%) was significantly the highest followed by early summer (0.009%), winter (0.007%), and autumn samples (0.006%), respectively. The flowers’ EO antioxidant analysis were tested by DPPH, FRAP and ABTS assays (in vitro). Results proved that A. javanica flowers’ EO, isolated during the four seasons, is a good source of natural bioactive antioxidants. Based on the three tested assays, the highest antioxidant activity was recorded in the spring. Testing of the chemical composition of the flowers’ EO was conducted for the season with the highest yield and the best antioxidant performance, recorded in spring, by a combination of gas chromatograph (GC) and gas chromatograph-mass spectrometer (GC-MS). This led to the identification of 29 volatile components, in which the flowers’ oil was characterized by angustione as a major compound. Photos by scanning electron microscope (SEM) showed prominent availability of star-shaped trichomes in the epidermis of the flowers.
KW - Aerva javanica
KW - Angustione
KW - Antioxidant activity
KW - GC-MS
KW - Hydrodistillation
KW - Sandy soil
KW - Seasonal variation
KW - Trichomes
UR - http://www.scopus.com/inward/record.url?scp=85120085960&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85120085960&partnerID=8YFLogxK
U2 - 10.3390/plants10122618
DO - 10.3390/plants10122618
M3 - Article
AN - SCOPUS:85120085960
SN - 2223-7747
VL - 10
JO - Plants
JF - Plants
IS - 12
M1 - 2618
ER -