The effect of fat replacement by aloe Vera gel on physicochemical, technological and sensory properties of sausage containing 40 % red meat

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Kianiani SH.; Varidi M. J. M.; VARIDI M.

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Journal: Iranian Food Science and Technology Research Journal Year:2019 | Volume:15 | Issue:1 (55) Page(s): 1-11

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Title

The effect of fat replacement by aloe Vera gel on physicochemical, technological and sensory properties of sausage containing 40 % red meat

Author(s)

Kianiani SH. | VARIDI M.J M" target="_blank"> VARIDI M. J. M. | VARIDI M. | Issue Writer Certificate

Keywords

Fat replacementQ2

Aloe Vera gelQ1

SausageQ2

Low fat productsQ1

Abstract

Introduction: Meat and meat products contribute about 20% to human fat consumption. Fat is the main source of energy and the base of fat soluble vitamins. Besides, it improves cooking yield and water holding capacity, conserves taste and flavor of products and affects the emulsion stability, juiciness, costumer acceptability and structural and rheological properties of meat products. But Animal fat contains a relatively high amount of saturated fatty acids and cholesterol, which can increase the risk of cardiovascular disease, diabetes, cancer types and obesity. Thus, the meat industry is interested in merchandising fat-reduced meat products without neglecting the positive effects of fat on flavor and texture. Various researches have shown that the substitution of fat on a polysaccharides base such as fibers, starch, gums, and gels have improved and modified the texture, residual moisture and freeze stability, and decreased the price of the products. Aloe vera leaf gel contains about 99 – 99. 5 % water and 1-0. 5 % of the total solid content. On dry matter basis Aloe Vera gel consists of 55% polysaccharides, 17 % sugar, 16 % mineral, 7% protein, 4% lipids and 1% phenolic compounds (Lawless et al., 2014). The most important carbohydrates of Aloe Vera gel are the long chain polysaccharides, comprising glucose and mannose, known as the glucomannans [β (1, 4) – linked acetylated mannan]. All the solid content of Aloe Vera gel are surrounded by polysaccharide mucilage layer. Literature review pointed out there have been little investigations into the functionality of Aloe Vera gel in the emulsion meat products. According to the importance of producing low-fat meat products from one hand as well as the nutritional values and health characteristics of Aloe Vera gel on the other hand, this study was designed to replace the fat with Aloe Vera gel in the production of low-fat German Sausage. Material and Methods: Sausage samples containing 40% of red meat (German Sausage) were produced based on the conventional plants formula. animal fat and vegetable oil replaced by 0, 50 and 100% Aloe Vera gel in the German Sausage formulation. All samples were cooked at 90° C temperature to achieve the core temperature of 70° C, followed by cooling, they were kept in the refrigerator (4° C) until the subsequent experiments. The AOAC (2000) methods were used for measuring the moisture content, the amount of fat, ash and protein. The amount of carbohydrate was calculated based on the calculation of the total weight difference from the sum of ash, protein, fat and moisture (according to the method FAO / WHO). The amount of energy was computed based on the total amount of energy from fats, proteins and carbohydrates. To measure the pH of samples by pH meter, method of choe et al (2013) was followed. The color analysis was done on the surface of Sausage cuts by chromometer. The parameters of color include L* (lightness), a* (redness) and b* (yellowness) were measured. Texture parameters include hardness(N), cohesiveness, springiness (cm), gumminess (N), chewiness (N. cm), adhesiveness were determined by texture analyzer as described by Bourne (1978). The sensory attributes were evaluated by 10 trained panelists. A five-point hedonic scale rating (1= very bad, 2=bad, 3= neither bad nor good, 4= good, 5= very good) was carried out. Results and Discussion: Physicochemical properties analysis indicated significant differences among meat products (p ≤ . 0. 01). The addition of Aloe Vera gel resulted a decrease in fat percentage and amount of energy, an increase in moisture and carbohydrate, but the amount of pH, protein and ash content did not change. This study showed that reducing the fat content and replacing by Aloe Vera gel caused a significant difference in the amount of energy (p≤ . 0. 01). With respect to the significant contribution of fat in the production of energy, the amount of energy was reduced as expected by reducing the fat of the formulation. The results indicated that the value of L * showed the negative and positive trends with animal fat and vegetable oil changes, respectively (p≤ . 0. 01). b* decreased by reducing the amount of fat and oil (p≤ 0. 01), but the value of a* always remained constant (p˃ 0. 05). The presence of Aloe Vera gel in Sausage caused a reduction in hardness, adhesiveness and gumminess (p<0. 05), while it did not affect the amount of adhesiveness and cohesiveness of samples (p˃ 0. 05). The substitution of fat with Aloe Vera gel had a significant effect on the sensory characteristics of German Sausage (p≤ . 0. 01). By reducing fat and oil and adding aloe gel to the German Sausage formulation, color acceptance score was decreased. In terms of panelists, the blank sample had the best color and the fifth sample color had the lowest score. Juiciness of the samples was increased by increasing the amount of gel. The results also showed that the fifth sample received the maximum score of juiciness. Sausages smell acceptance negatively changed by reducing the fat content and adding Aloe Vera gel. Third and fourth treatments got the highest texture score. Also, the third sample had the highest scores for taste and general acceptance. Chewiness analyzing showed that by increasing the amount of Fat replacement the rate of this factor decreased. as well as the maximum rate of chewiness was related to the blank sample.

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APA: Copy

Kianiani, SH., Varidi, M. J. M., & VARIDI, M.. (2019). The effect of fat replacement by aloe Vera gel on physicochemical, technological and sensory properties of sausage containing 40 % red meat. IRANIAN FOOD SCIENCE AND TECHNOLOGY RESEARCH JOURNAL, 15(1 (55) ), 1-11. SID. https://sid.ir/paper/367429/en

Vancouver: Copy

Kianiani SH., Varidi M. J. M., VARIDI M.. The effect of fat replacement by aloe Vera gel on physicochemical, technological and sensory properties of sausage containing 40 % red meat. IRANIAN FOOD SCIENCE AND TECHNOLOGY RESEARCH JOURNAL[Internet]. 2019;15(1 (55) ):1-11. Available from: https://sid.ir/paper/367429/en

IEEE: Copy

SH. Kianiani, M. J. M. Varidi, and M. VARIDI, “The effect of fat replacement by aloe Vera gel on physicochemical, technological and sensory properties of sausage containing 40 % red meat,” IRANIAN FOOD SCIENCE AND TECHNOLOGY RESEARCH JOURNAL, vol. 15, no. 1 (55) , pp. 1–11, 2019, [Online]. Available: https://sid.ir/paper/367429/en

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