Showing 3 results for Mobahi
Volume 18, Issue 119 (january 2021)
Abstract
Dark chocolate as a best-selling product worldwide with the main health-oriented ingredients such as cocoa powder and butter, along with a high level of consumer awareness of maintaining and enhancing health, reinforces the idea of enriching all types of chocolate with probiotic strains. The aim of this study was to investigate the effects of the presence of microencapsulated bacteria Lactobacillus acidophilus, Streptococcus thermophilus and Bifidobacterium using sodium alginate and resistant corn starch on physicochemical properties including moisture, acidity, water activity, particle size distribution and texture, the plastic and apparent viscosity of probiotic dark chocolate were investigated during storage for 180 days at 4 ° C and 25 ° C to determine the storage temperature. In order to analyze the data obtained from the research, factorial experiment in the form of a completely randomized design was used and the comparison of means was performed by Duncanchr('39')s multiple range test at the probability level (α = 1%). According to the results, in days 0, 7, 30, 90, 150 and 180 physicochemical, chocolate and rheological properties at two storage temperatures and also between different treatments of probiotic dark chocolate obtained from the strains, no significant difference (P <0.05) was observed. Thus, all three products as probiotic dark chocolate have suitable characteristics in terms of the mentioned characteristics to be present in the consumer market.
Volume 18, Issue 121 (March 2022)
Abstract
Increasing public awareness of the benefits of preventing functonal products has led to the selection of food products that are very popular and widely consumed by researchers to improve public health. In this study, probiotic dark chocolate (PDC) Was enriched with Lactobacillus acidophilus, DDS-1®, Bifidobacterium, UABla-12 ™ and Streptococcus thermophilus (TH-4®) in the form of microencapsulation with sodium alginate and resistant corn starch to 60% dark chocolate. Production and survival of probiotics and the effect of the presence of these bacteria on the sensory properties of chocolate during a 180-day storage period at 4 °C and 25 °C (with the aim of determining the storage temperature) by passing through the gastrointestinal simulator and when Intestinal delivery was assessed. During the population maintenance period, all three strains had a significant difference with themselves and other strains in the two storage temperatures and were associated with a decrease (P <0.05). Storage of the product at 4 °C caused the survival of Bifidobacterium population at 7 log cfu/g level, in the other two strains at 8 log cfu / g level and at 25 °C 7 log cfu/g, which indicates the maintenance of probiotic conditions the product was at both temperatures. The results also showed that the addition of these three strains of probiotic bacteria did not have a significant effect (P <0.05) on the sensory properties of dark chocolate due to two storage temperatures, but storage at 25 °C in control and probiotic samples reduced sensory quality. Therefore, storing probiotic dark chocolate at a temperature of 4 °C can make this product last for at least 6 months and be presented to the consumer market as a useful product.
Volume 22, Issue 159 (May 2025)
Abstract
Pectin as a hydrocolloid located in the cell wall of plants can be a secondary product in food industry processing. Canola after de-oiling has high amounts of pectin. To extract pectin from rapeseed meal, the comparison method of enzymatic hydrolysis extraction was used with and without the presence of microwaves (with power of 600 W at three times 1, 3, and 5 minutes). The effect of microwave irradiation time on extraction performance and physicochemical and mechanical characteristics of extracted pectin was investigated. Physical, mechanical, and chemical characteristics showed that the presence of the microwave process improved the functional properties of the extracted pectin and facilitated the extraction process (p<0.5). The highest yield of pectin extraction was 9.1% (W/W) in 5 minutes of radiation with 600 W power in the microwave-assisted process with 600 W power. This auxiliary process affected the degree of esterification and galacturonic acid content of pectin so that it can form a gel in the presence of low sugar amounts and is suitable in diet products. The content of galacturonic acid in all samples was higher than 60%, which indicates a high gel formation capacity. Pectin extracted during 5 minutes of microwave irradiation with 600 W power presented the best characteristics with the maximum content of galacturonic acid (76.51%), the highest emulsifying activity (58.01%), and emulsion stability (95.03%). The presence of the microwave-assisted process reduced the surface tension values of the pectin aqueous solution (43.11% in 5 minutes of irradiation) and affected and improved the foaming capacity of pectin (the highest value in 5 minutes of irradiation was 84.13%). Irradiation during microwave time caused significant changes in pectin properties, such as intrinsic viscosity, mean viscosity, and water holding capacity, to form a higher-quality gel.
