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Molecules 2015, 20(7), 12093-12113; doi:10.3390/molecules200712093

Chemical Composition and Antioxidant and Antibacterial Activities of an Essential Oil Extracted from an Edible Seaweed, Laminaria japonica L.

School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Korea
These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
Academic Editor: Luca Forti
Received: 20 April 2015 / Revised: 23 June 2015 / Accepted: 25 June 2015 / Published: 2 July 2015
(This article belongs to the Collection Recent Advances in Flavors and Fragrances)
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Abstract

Laminaria japonica L. is among the most commonly consumed seaweeds in northeast Asia. In the present study, L. japonica essential oil (LJEO) was extracted by microwave-hydrodistillation and analyzed by gas chromatography and mass spectroscopy. LJEO contained 21 volatile compounds, comprising 99.76% of the total volume of the essential oil, primarily tetradeconoic acid (51.75%), hexadecanoic acid (16.57%), (9Z,12Z)-9,12-Octadecadienoic acid (12.09%), and (9Z)-hexadec-9-enoic acid (9.25%). Evaluation of the antibacterial potential against three foodborne pathogens, Bacillus cereus ATCC 10876, Escherichia coli O157:H7 ATCC 43890, and Staphylococcus aureus ATCC 49444, revealed that LJEO at a concentration of 25 mg/paper disc exerted high antibacterial activity against S. aureus (11.5 ± 0.58 mm inhibition zone) and B. cereus (10.5 ± 0.57 mm inhibition zone), but no inhibition of E. coli O157:H7. LJEO also displayed DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging activity (80.45%), superoxide anion scavenging activity (54.03%), and ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radical and hydroxyl radical scavenging at 500 µg/mL. Finally, LJEO showed high inhibition of lipid peroxidation with strong reducing power. In conclusion, LJEO from edible seaweed is an inexpensive but favorable resource with strong antibacterial capacity as well as free radical scavenging and antioxidant activity; therefore, it has the potential for use in the food, cosmetics, and pharmaceutical industries. View Full-Text
Keywords: antibacterial; antioxidant; chemical composition; essential oil; Laminaria japonica; seaweed antibacterial; antioxidant; chemical composition; essential oil; Laminaria japonica; seaweed
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MDPI and ACS Style

Patra, J.K.; Das, G.; Baek, K.-H. Chemical Composition and Antioxidant and Antibacterial Activities of an Essential Oil Extracted from an Edible Seaweed, Laminaria japonica L.. Molecules 2015, 20, 12093-12113.

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