Comparative Analysis of the Chemical Composition, Antimicrobial and Antioxidant Activity of Essential Oils of Spices Used in the Food Industry in Brazil

Abstract

There are many food-borne pathogens in the wild and they are considered the cause of serious public health problems in both developed and developing countries. The use of natural products, such as antimicrobial compounds, has been increasing, in an attempt to control bacteria present in foods, mainly pathogens resistant to conventional antibiotics. This chapter is intended to provide the antimicrobial and antioxidant activity of essential oils of Cinnamomum zeylanicum (cinnamon), Origanum vulgare (oregano), Zingiber officinale (ginger), Rosmarinus officinalis (rosemary), Citrus latifolia (tahiti lemon) and Curcuma longa (saffron) as well as to determinate its chemical composition. The oils had been extracted by hydrodistillation with a Clevenger type apparatus and the antimicrobial activity was performed against standard strains Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The antioxidant activity was carried out using the ABTS [2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)] method. The essential oils presented a mixture of mono-and sesquiterpenes. The best minimum inhibitory concentration was determined to C. zeylanicum against S. aureus. O. vulgare antioxidant activity presented inhibition of 90.74% and EC 50 of 14 μg mL −1 . These results demonstrate that the essential oils analyzed presented efficient antibacterial activity and antioxidant action being able to satisfy the demand of use as control of microorganisms in the food.

Extraction Optimization, Analysis and Biological Activity of Volatile Compounds from Padina pavonia Collected from Farasan Island’s Coasts, Jazan, Saudi Arabia

“…In contrast to our results, some previous studies reported the non-efficacy of algal methanol extract of Sargassum vulgare against E. coli and S. aureus. 30 Other studies showed that brown algae collected in spring and autumn showed good antimicrobial activity. 31 The biological activity of marine brown algae is thought to be influenced by environmental factors, reproductive state and seasonality.…”

Synergistic Antioxidant and Antibacterial Advantages of Essential Oils for Food Packaging Applications

“…EOs are liquid mixtures of volatile and hydrophobic compounds obtained from different parts of aromatic medicinal plants, such as leaves, buds, flowers, shoots, peels, barks, twigs, fruits, seeds, and roots. They provide the essence of the plant with specific odoriferous and lipophilic characteristics, which are responsible for the aroma and flavor of spices [ 13 ]. Currently, approximately 3000 varieties of EOs are well known, of which approximately 300 are commercially important in the flavor, fragrance, pharmaceutical, food, and cosmetic industries [ 14 ].…”