In the present study, physicochemical, microbial, and rheological attributes of Synbiotic set bio‐yogurt samples affected by Lactobacillus acidophilus LA‐5, honey, and aqueous cinnamon extract were evaluated which stored at 4 ℃ for 15. Yogurt samples prepared with lower levels of flavors (honey and aqueous cinnamon extract) indicated a lower pH (<3.5) and water holding capacity (WHC), and also the higher acidity (12‐14D), syneresis, and dry matter (DM) along with cold storage. Because of the acidification process, L* value was decreased whereas a* and b* values increased in all samples. During the storage, time affected pH, titrable acidity, syneresis, WHC, however, complex viscosity, probiotics’ survival, dry matter, L*, a*, and b* values were found to be insignificant (p > .05).
Practical applications
Results of rheological evaluation expressed that raising the levels of additives facilitated the set yogurt to form weak complex viscosity, in which cinnamon had superior influence compared to honey during the fermentation process and storage. In addition, the results of microbial measurements indicated that honey and aqueous cinnamon extract did not reduce the survival of probiotic (L. acidophilus LA‐5) during storage time.
Free radicals produced during oxidation on the one hand and food contaminated with food source microorganisms on the other hand are serious threats to human health which increase the need to use natural compounds to replace synthetic and chemical substances used. In the present study, the antioxidant and antimicrobial activity of the cinnamon extract was investigated during hamburger meat storage. Two concentrations of cinnamon ultrasound-assisted extraction (2,000, 3,000 ppm) were added to the final evaluation on hamburger meat samples and tested at temperatures of 18, 10, and 4°C at 5-day intervals. The results showed that in all tests of peroxide value, thiobarbituric acid, and total volatile nitrogen, increasing the concentration of the How to cite this article: Sohrabpour S, Esmaeilzadeh Kenari R, Raftani Amiri Z. Effect of cinnamon ultrasound-assisted extract on chemical and microbial properties of hamburger meat under different temperatures and time conditions during storage. J
Several methods are employed to remove the moisture from organic or non-organic materials, in a variety of industrial applications. Among all, dehydration of fruits is an alternative to decline post-harvest loss of fruits and also a process to produce dried fruits, which can be directly consumed or become part of foodstuffs like cakes, and many others. In particular, drying provokes a series of changes in materials, such as oxidation, browning, or loss of nutritional-functional properties. Ultrasound is famous to have a significant effect on the rate of various processes. Quince is a fruit which is rich in polyphenols, organic acids, and amino acids with important health benefits. The present study examined the effect of ultrasound and blanching pre- treatments prior to convective drying on quality properties of dehydrated quince slices. A completely randomized design was used to address the effect of time of sonication (10−30 min), temperature (40−60°C), and anti-browning agents including acetic, citric, and ascorbic acids as well as distilled water on quality properties of dehydrated quince slices. The obtained results revealed that the shortest drying time (270.33±35.59 min) and the highest total phenolic content (57.29±12.72 mg GAE/ml) were recorded for samples exposed to the ascorbic acid solution. Comparison of the pre-treated and control samples indicated that the highest rehydration ratio (2.75±0.29 %) was achieved by blanched samples in acetic acid solution. The use of citric acid solution led to the highest score in the taste (3.45±1.1), color (3.84±0.9), and texture (3.47±1.02) of quince slices on the basis of a 5- point hedonic scale. The obtained results depended on both ultrasound and the type of blanching solution. Citric and acetic acid samples indicated the highest values of the sensory evaluation and water loss, respectively.
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