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Chemical composition of essential oils and in vitro antioxidant activity of fresh and dry leaves crude extracts of medicinal plant of Lactuca Sativa L. native to Sultanate of Oman.
Asian Pac J Trop Biomed 2013; 3(5):353-7AP

Abstract

OBJECTIVE

To isolate and analyse the chemical composition in the essential oils and free radical scavenging activity of different crude extracts from the fresh and dry leaves of vegetable plants of Lactuca sativa L. (L. sativa).

METHODS

The essential oils and volatile chemical constituents were isolated from the fresh and dry leaves of L. sativa (lettuce) grown in Sultanate of Oman by hydro distillation method. The antioxidant activity of the crude extracts was carried out by well established free radical scavenging activity (DPPH) method.

RESULTS

About 20 chemical compounds of different concentration representing 83.07% and 79.88% respectively were isolated and identified by gas chromatography-mass spectroscopy in the essential oils isolated from the fresh and dry leaves as α-pinene (5.11% and 4.05%), γ-cymene (2.07% and 1.92%), thymol (11.55% and 10.73%), durenol (52.00% and 49.79%), α-terpinene (1.66% and 1.34%), thymol acetate (0.99% and 0.67%), caryophyllene (2.11% and 1.98%), spathulenol (3.09% and 2.98%), camphene (4.11% and 3.65%), limonene (1.28% and 1.11%) representing these major chemical compounds. However, some other minor chemical constituents were also isolated and identified from the essential oil of lettuce including β-pinene, α-terpinolene, linalool, 4-terpineol, α-terpineol, o-methylthymol, L-alloaromadendrene and viridiflorene.

CONCLUSIONS

The chemical constituents in the essential oils from the locally grown lettuce were identified in the following classes or groups of chemical compounds such as monoterpenes, sesquiterpenes volatile organic compounds and their oxygenated hydrocarbons. Therefore, the essential oils and the crude extracts from Omani vegetable species of lettuce are active candidates which would be used as antioxidant, antifungal or antimicrobial agents in new drugs preparation for therapy of infectious diseases.

Authors+Show Affiliations

School of Pharmacy, College of Pharmacy and Nursing, University of Nizwa, P. O. Box 33, Postal Code 616, Nizwa, Sultanate of Oman.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23646297

Citation

Al Nomaani, Rahma Said Salim, et al. "Chemical Composition of Essential Oils and in Vitro Antioxidant Activity of Fresh and Dry Leaves Crude Extracts of Medicinal Plant of Lactuca Sativa L. Native to Sultanate of Oman." Asian Pacific Journal of Tropical Biomedicine, vol. 3, no. 5, 2013, pp. 353-7.
Al Nomaani RS, Hossain MA, Weli AM, et al. Chemical composition of essential oils and in vitro antioxidant activity of fresh and dry leaves crude extracts of medicinal plant of Lactuca Sativa L. native to Sultanate of Oman. Asian Pac J Trop Biomed. 2013;3(5):353-7.
Al Nomaani, R. S., Hossain, M. A., Weli, A. M., Al-Riyami, Q., & Al-Sabahi, J. N. (2013). Chemical composition of essential oils and in vitro antioxidant activity of fresh and dry leaves crude extracts of medicinal plant of Lactuca Sativa L. native to Sultanate of Oman. Asian Pacific Journal of Tropical Biomedicine, 3(5), pp. 353-7. doi:10.1016/S2221-1691(13)60076-3.
Al Nomaani RS, et al. Chemical Composition of Essential Oils and in Vitro Antioxidant Activity of Fresh and Dry Leaves Crude Extracts of Medicinal Plant of Lactuca Sativa L. Native to Sultanate of Oman. Asian Pac J Trop Biomed. 2013;3(5):353-7. PubMed PMID: 23646297.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chemical composition of essential oils and in vitro antioxidant activity of fresh and dry leaves crude extracts of medicinal plant of Lactuca Sativa L. native to Sultanate of Oman. AU - Al Nomaani,Rahma Said Salim, AU - Hossain,Mohammad Amzad, AU - Weli,Afaf Mohammed, AU - Al-Riyami,Qasim, AU - Al-Sabahi,Jamal Nasser, PY - 2013/02/23/received PY - 2013/04/25/accepted PY - 2013/5/7/entrez PY - 2013/5/7/pubmed PY - 2013/5/7/medline KW - Antioxidant activity KW - Clevenger apparatus KW - Durenol KW - Essential oil KW - GC-MS analyses KW - Lactuca sativa KW - Omani lettuce KW - Organic crude extracts KW - Soxhlet extractor KW - Thymol SP - 353 EP - 7 JF - Asian Pacific journal of tropical biomedicine JO - Asian Pac J Trop Biomed VL - 3 IS - 5 N2 - OBJECTIVE: To isolate and analyse the chemical composition in the essential oils and free radical scavenging activity of different crude extracts from the fresh and dry leaves of vegetable plants of Lactuca sativa L. (L. sativa). METHODS: The essential oils and volatile chemical constituents were isolated from the fresh and dry leaves of L. sativa (lettuce) grown in Sultanate of Oman by hydro distillation method. The antioxidant activity of the crude extracts was carried out by well established free radical scavenging activity (DPPH) method. RESULTS: About 20 chemical compounds of different concentration representing 83.07% and 79.88% respectively were isolated and identified by gas chromatography-mass spectroscopy in the essential oils isolated from the fresh and dry leaves as α-pinene (5.11% and 4.05%), γ-cymene (2.07% and 1.92%), thymol (11.55% and 10.73%), durenol (52.00% and 49.79%), α-terpinene (1.66% and 1.34%), thymol acetate (0.99% and 0.67%), caryophyllene (2.11% and 1.98%), spathulenol (3.09% and 2.98%), camphene (4.11% and 3.65%), limonene (1.28% and 1.11%) representing these major chemical compounds. However, some other minor chemical constituents were also isolated and identified from the essential oil of lettuce including β-pinene, α-terpinolene, linalool, 4-terpineol, α-terpineol, o-methylthymol, L-alloaromadendrene and viridiflorene. CONCLUSIONS: The chemical constituents in the essential oils from the locally grown lettuce were identified in the following classes or groups of chemical compounds such as monoterpenes, sesquiterpenes volatile organic compounds and their oxygenated hydrocarbons. Therefore, the essential oils and the crude extracts from Omani vegetable species of lettuce are active candidates which would be used as antioxidant, antifungal or antimicrobial agents in new drugs preparation for therapy of infectious diseases. SN - 2221-1691 UR - https://www.unboundmedicine.com/medline/citation/23646297/Chemical_composition_of_essential_oils_and_in_vitro_antioxidant_activity_of_fresh_and_dry_leaves_crude_extracts_of_medicinal_plant_of_Lactuca_Sativa_L__native_to_Sultanate_of_Oman_ L2 - https://linkinghub.elsevier.com/retrieve/pii/apjtb-03-05-353 DB - PRIME DP - Unbound Medicine ER -