Volume 5, Issue 2 (June 2018)
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Original article
P. 41-48
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- Gram-positive bacteria were more sensitive than Gram-negatives against our analyzed Essential Oils (EOs).
- Yeasts were more sensitive than bacteria against our analyzed EOs.
- Oregano and thyme EOs showed the highest antimicrobial activity.
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- Phenolic profiles and antioxidant activities of three Algerian olive oil cultivars were significantly different.
- Total phenolics of the studied cultivars were ranged from 132.8 to 318.9 mg gallic acid equivalents/kg.
- The ortho-diphenols contents varied between 13.02 and 31.1 mg caffeic acid equivalents/kg.
- Chemlal and Azeradj Algerian olive oil cultivars were considered as appropriate sources of bioactive phytochemicals.
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- Spray-drying and freeze-drying methods were more effective than pasteurization to reduce microbial loads of colostrum.
- Freeze-drying treatment showed a lower reducing effect on the IgG level comparing to the other ones.
- Freeze and spray-drying methods could be more effective than pasteurization to enhance quality of colostrum.
Abstract
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- Clove, black pepper, and cinnamon Essential Oils (EOs) showed considerable antibacterial and antioxidant properties.
- Eugenol, cinnamaldehyde, and β-caryophyllene were the main constituents of clove, cinnamon, and black pepper EOs, respectively.
- Clove, black pepper, and cinnamon EOs may serve as effective natural preservatives in the food industry.
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- Totally, 84 out of 300 (28%) shrimp samples were contaminated with Staphylococcus aureus.
- The contamination rate in fresh samples was significantly lower than that in frozen samples.
- The most and least prevalent genes found in the S. aureus isolates were sea and tsst, respectively.
Short communication
P. 77-80
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- Moisture, total ash, and crude fat of the bread samples were ranged from 12.16 to 28.38%, 0.77 to 2.33%, and 0.41 to 1.87%, respectively.
- Dietary fiber, crude protein, and carbohydrate of the bread samples were ranged from 0.13 to 1.36%, 8.01 to 14.34%, and 54.83 to 76.99%, respectively.
- Calcium, iron, and zinc levels were ranged from 11.1 to 22.0, 1.2 to 12.5, and 0.7 to 2.1 mg/100 g, respectively.
- Some wheat bread sampled from Bahir Dar City did not meet the bread quality standards.
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