Anti-yeast effects of some plant extracts on yeasts contaminating processed poultry products in Egypt

Abstract

A total of 60 random samples of fresh chicken burger, fillet, and luncheon (20 of each) were collected from markets at Tanta city. The average total yeast counts (cfu/g) in burger, fillet, and luncheon samples were 2.7 × 10 6 ± 1.1 × 10 6 , 2.1 × 10 5 ± 0.9 × 10 5 , and 1.4 × 10 7 ± 0.7 × 10 7 , respectively. A total of 158 yeast isolates of 23 species were isolated and identified. Candida, Cryptococcus, Debaromyces, Issatchenkia, Pichia, Rhodotorula, Saccharomyces, Trichosporon and Yarrowia species were recovered from the examined samples of fresh chicken meat products in varying percentages ranging from 5% to 50%. The tested plant extracts of cinnamon, clove and thyme revealed a potent anti-yeast activity against C. albicans, D. hansenii and S. cerevisiae at 20% concentration, and a moderate inhibitory activity against these yeast strains at 10% concentration, while garlic extract had a lesser inhibitory effect on the yeast strains tested at the same concentration. Moreover, thyme, cinnamon and clove extracts had a complete inhibitory effect on chicken fillet inoculated with Candida albicans when incubated at 5°C and 25°C.

Activity of essential oils against food-spoiling yeast. A review.

“…A study of the agar disc diffusion method on S. cerevisiae and Rhodotorula sp. for onion oil and D. hansenii and S. cerevisiae for garlic oil confirmed the present investigation. Lemon and grapefruit oils displayed static activity against D. hansenii and S. cerevisiae (MIC 10–24 μl/ml, Table ).…”

“…The lowest fungistatic activity was found for onion and garlic oils containing biologically active organosulfur compounds . However, garlic oil is reported to possess antibacterial and antifungal activity due to diallylsulfide, diallyltrisulfide, diallyltetrasulfide action; the oil's effectiveness can differ, depending on the studies …”

“…[24] However, garlic oil is reported to possess antibacterial and antifungal activity due to diallylsulfide, diallyltrisulfide, diallyltetrasulfide action; [24,25] the oil's effectiveness can differ, depending on the studies. [14,26] Experiments carried out by the agar disc diffusion, microplate and bioimpedimetric methods prove that thyme oil is most active whereas onion and garlic oils are the least active against the yeasts under examination. The differences in antimicrobial activity results obtained for other essential oils by the agar diffusion method may have been caused by different rates of diffusion of particular oil components into the agar medium or by evaporation of some of the components during the incubation time.…”

Effect of absorbent pads containing oregano essential oil on the shelf life extension of overwrap packed chicken drumsticks stored at four degrees Celsius

“…These results are in agreement with those of Conner and Beuchat (1984) and Chouliara et al (2007), who reported the inhibitory action of oregano oil on growth of yeasts. Brr and Mahmoud (2005) also showed that thyme extract, consisting of carvacrol and thymol as major components like oregano, had an inhibitory effect on the growth of Candida albicans, Debaryomyces hansenii, and Saccharomyces cerevisiae.…”

Protective effect of essential oil ofCinnamomum verumbark on hepatic and renal toxicity induced by carbon tetrachloride in rats

“…Throughout history, cinnamon has been believed to have several health benefits such as reducing triglyceride, LDL, total cholesterol, (Blevins et al 2007) (Connell et al 2016), anti-yeast activity (Brr and Mahmoud 2005), anti-inflammatory action, anti-platelet aggregation, and improving blood circulation (Chung et al 2011). One other example is Silymarin, a flavonolignan complex mixture from milk thistle plant, is already used for treatment of liver diseases, which we used in this study as reference.…”