جستجوی مقالات مرتبط با کلیدواژه « cumin essential oil » در نشریات گروه « صنایع غذایی »

Cheese is a dynamic dairy product that goes through extensive biochemical and microbial changes as it ripens. The growth of molds, such as Penicillium and Aspergillus, has long been an issue for producers during the processing and ripening process. The aim of this study was to evaluate the antimicrobial properties of cumin essential oil in the manufacturing of lactic cheese, as well as investigation of the effect of essential oil on the survival of lactic acid bacteria in cheese. For this purpose, concentrations of 200, 500 and 1000 mg/L of cumin essential oil were added to lactic cheese samples and the total population of bacteria, mold and yeast, lactobacilli and lactic streptococci were counted and the direct growth of Aspergillus flavous and Penicillium citrinum on pieces of cheese was studied in the first, 15th, 30th and 60th days of refrigerated cheese. Also, the impact of effect of essential oil on the sensory properties of the samples was investigated. The results revealed that with the population of all microbial groups rises as storage time increases, but this tendency is slower in samples containing essential oils and this inhibitory effect is directly related to increasing the concentration of essential oils. Furthermore, the synergistic effects of cumin essential oil and lactic acid bacteria in the control of microorganisms were also demonstrated. Cumin essential oil did not inhibit the growth of lactic acid bacteria in cheese samples and even encouraged their growth by reducing the number of competing microbes. Considering the general acceptance of the sensory properties of the samples, the use of 500 mg/L cumin essential oil is recommended, especially to control the growth of Aspergillus and Penicillium molds in Lactic cheese.

Increasing consumer awareness of the dangers of chemicals and the effect of heat treatment on the foods nutritional value, lead to increase of the demand for the production and use of fresh or minimaly processed foods. In this study, the ability of cumin, fennel and clove essential oils (concentrations of 50, 75, 100, 200 ppm and pure form) in non-thermal inactivation of courgette peroxidase enzyme were investigated. The results showed that only pure form and concentration of 200 ppm of cumin essential oil and also pure form and high concentrations (100 and 200 ppm) of fennel essential oil were able to reduce the peroxidase enzyme activity in courgette but using concentrations of 50 and 75 ppm of fennel essential oil leads to increase peroxidase enzyme activity. Clove essential oil in all studied concentrations reduced the peroxidase enzyme activity, which indicates the ability of clove essential oil to react with oxygen and inhibit the reaction of enzyme peroxidase and polyphenol oxidase (enzymatic browning reaction). The best conditions for inactivation of peroxidase enzyme under the influence of cumin essential oil included a concentration of 194.5 ppm essential oil and an enzymatic activity time of 0.02 seconds, while the optimal conditions for achieving the lowest peroxidase activity included using 200 ppm fennel essential oil and enzyme activity time of 0 second, and 200 ppm of clove essential oil and enzymatic activity time of 1.7 second.

The aim of the present research was to encapsulate cumin essential oil with phosphatidylcholine to overcome the fortification difficulties such as low water solubility and bioavailability and was protected umin essential oil from degradation in the presence of oxygen, light and temperatures. Cumin essential oil loaded nanophytosome (60 mg phosphatidylcholine- 30 mg cumin essential oil) was prepared by thin layer hydration method. Physicochemical properties of nanophytosome such as particle size, polydispersity index, encapsulation efficiency turbidity and zeta potential were investigated. Cumin essential oil nanophytosome showed excellent characteristics i.e. sub 100 nm particle sizes, low size distribution (PDI<0.3). and encapsulation efficiency 94/46 %. The turbidity of cumin essential oil loaded nanophytosome were remained unchanged and ζ-potential changed from +9 mV in blank nanophytosome to -19 mV in cumin essential oil loaded nanophytosome. The release rate increased gradually by increasing time. About 60% of free cumin essential oil were released in phoshphat buffer during 6 houre while 50 % of encapsulated cumin essential oil were released during 24 houre. In vitro release of essential oil was followed an exponential equation (first order Q (t) = a· (1-exp (-k·t))). This study indicates that the release of bioactive compounds from liposomes can be reduced by capsulated with phosphatidylcholine, allowing an application of with a nanophytosome controlled release of Cumin essential oil in water-based foods.