Effect of Rosemary Spice Extractive on Growth of Microorganisms in Meats1

Abstract

A study was conducted to examine the possible bacteriostatic and bactericidal effect of rosemary spice extractive (RSE) on growth of selected microflora and total bacterial populations in mechanically deboned poultry meat (MDPM), turkey breast, and beef. Definite bactericidal effect by 0.1% RSE became evident when a pure culture of Staphylococcus aureus was tested in a bacteriological medium. Such an effect was not observed when Escherichia coli, Enterobacter aerogenes, Pseudomonas fluorescens, and Salmonella typhimurium were tested. When various types of meat were used as growth media, RSE showed a bactericidal effect on S. aureus only at 5% concentration. Such an effect was not observed on total plate counts of the meat samples.

Chemical composition and antimicrobial activity of essential oils from TunisianPituranthos tortuosus (Coss.) Maire

“…This is in agreement with observations made by other authors that Gram-positive bacteria are more susceptible to essential oils than Gram-negative ones. 11,12 The two oils tested displayed antibacterial activities; efficiency differed and depended on the type of the oil as well as on the bacterial strain used.…”

Essential Oils: Natural Antimicrobials for Fish Preservation

“…However, few investigations have reported their potential role in fish [49][50][51][52][53][54][55]. In general, higher concentrations of essential oils or their active compounds are required to achieve the same antimicrobial effect in food as compared to that in culture media [26,[56][57][58]. This is due to the interaction between active compounds of essential oils and nutrients of foods [7,10,45,55,59].…”

New processing technologies: an overview

“…Furthermore, the levels necessary to inhibit microorganisms in foods have sometimes been found to be much higher than those determined using cultures (Farbood et al 1976). Other disadvantages associated with the use of many plant-derived antimicrobials in foods (e.g.…”