Search published articles


Showing 5 results for sarabandi


Volume 15, Issue 5 (November & December (Articles in English & French) 2024)
Abstract

Multilingualism and its tangled relationship with culture have been the center of debate for many years. It still sparkles various conceptual arguments and day by day, more academic research is circulating on this subject. The concept of multilingualism and the arguments around this discourse roots in the language itself. To fully grasp the notion of cultural multilingualism, first, we need to perceive how and where language and culture are interlinked. The study of culture has the originality of studying history itself. The first studies on both language and culture date back to the earliest time human attempted to analyze and perceive history. The globalization of multilingualism has led scientists and experts to analyze multilingualism through a cultural lens. It's only in a few decades that perceiving and understanding multilingualism through cultural perspectives has opened the eyes of experts to new horizons. Concerning this fact, this study has evaluated Never Let Me Go, a 2005 Nobel-winning novel by the Japanese-British novelist and screenwriter, Kazuo Ishiguro according to cultural multilingual values. Additionally, this study questions the concept of cultural multilingualism, together with its significance in shaping one's identity and self as the main key in Ishiguro's novel. Proven by the given facts, the current study illustrates how cultural multilingualism forms the author's writing style and mindset as a multilingual individual. 

Volume 15, Issue 84 (2-2019)
Abstract

Fenugreek seed (Graceum Trigonella foenum) is a rich source of lysine and tryptophan. In this study, the enzymatic hydrolysis of fenugreek seed protein with the pancreatin enzyme was performed using the response surface methodology with independent variable including: temperature 20 - 60 ° C, time 30-270 min, and enzyme to substrate ratio of 25.23 - 0.25%. Optimum conditions to achieve the highest DPPH radical scavenging capacity and reducing power were obtained at 46. 12 ° C, and enzyme: substrate ratio of 1.84% and time of 175.96 min. Then, the antioxidant properties of the optimum treatment were measured at different concentrations (10-20 mg/ml) and compare with antioxidant properties of non-hydrolyzed protein and vitamin C. The highest DPPH radical scavenging capacity and radical hydroxyl inhibition and Fe2+ chelating and total antioxidant activity were 52.98%, 70.99%, 72.63%, absorption 1.28 at wavelength of 695 nm and 0.80 at wavelength of 700 nm, respectively. The results showed that enzymatic hydrolysis significantly increased the antioxidant properties of the protein. Therefore, the hydrolyzed protein of fenugreek seed can be used in food as a substitute for synthetic antioxidants.

Volume 15, Issue 85 (3-2019)
Abstract

The purpose of this study was to produce the spray dried stevia extract and evaluation of Arabic gum concentration on production yield, physicochemical and morphological properties of stevia powder. the effect of sucrose replacement with stevia powders on physicochemical, texture and sensory properties of Aloe Vera jelly were investigated. The spray drying process was carried out at 10, 20 and 30% w/v concentrations. Then, 25, 50 and 75% of sucrose in the formulation of Aloe Vera jelly was replaced with 0.25, 0.50 and 0.75% of stevia powders. the maximum yield of powder(47.73%)has been obtained at 10:90 ratio. The amount of moisture, aw and hygroscopicity of powders decreased with increasing the carrier ratio.Other properties such as bulk, particle and true density, solubility and wettability of powders decreased with increasing the carrier ratio. These properties were varied in the range of 0.39-0.46 g/ml, 0.42-0.57g/ml, 1.42-1.55g/ml, 89.10-92.30%, and 15.39- 27.52 s. Also, flow ability behavior of samples improved by increasing the carrier ratios. According to the results of scanning electron microscopy, the increase of carrier concentration also led to the production of larger particles with wrinkled surface and irregular shapes. Evaluation of the physicochemical properties of the jelly samples revealed that by increasing the stevia concentration, the moisture content, synersis and acidity of samples increased, while the brix, gel strength and pH decreased. Treatments A, B and D(containing 0.25, 0.50 and 0.25% of G1 and G2 powder respectively)showed higher acceptability regarding sensory characteristics and did not show significant differences with the control sample

Volume 15, Issue 85 (3-2019)
Abstract

Green tea leaves is a non-fermented product which contains many phenolic compounds. Green tea polyphenols are natural compound with antioxidants and anti-carcinogenic potential. Polyphenols are sensitive to high temperature and alkaline pH. To improve the stability of polyphenols, green tea extract was microencapsulated by co-crystallization technique. Entrapment yield, loading capacity, antioxidant activity, characteristics of co-crystallized product such as moisture, water activity, bulk and tapped density, solubility and hygroscopicity, morphology as well as flowability properties of powder (carr index, hausner ratio and angle of repose) were characterized. It was revealed that the effect of concentration on total phenolic compounds of co-crystallized products was significant (p<0.05). Encapsulation efficiency was increased by increasing the extract concentration. The 10% concentration of microencapsulated extract showed the highest DPPH scavenging activity, ABTS and hydroxyl radicals inhibition activity, and reducing power (56.90, 69.37, 71.63% & 0.81, respectively). The difference in particle size of co-crystallized product was significantly (p˂0.05) influenced the flow properties. In general, the values of water activity, moisture content and hygroscopicity showed that co-crystallized product was stable and have good characteristics during storage. Therefore, microencapsulation by co-crystallization technique can be used as an efficient method for increasing the stability of green tea extract against the environmental conditions.

Volume 17, Issue 107 (January 2021)
Abstract

In this research, enzymatic hydrolysis of casein was performed using alcalase and pancreatin enzymes under optimal conditions. Then, the effect of type and combination of maltodextrin and gum Arabic carriers on physicochemical properties (moisture content, water activity, bulk density, tapped density, solubility, hygroscopicity), maintaining antioxidant activity (ABTS, DPPH and hydroxyl radical scavenging activities, reducing power, Fe2+ and Cu2+ chelating activity), morphology and mean particle size of spray-dried casein hydrolysates was evaluated. The results showed that moisture content, water activity, bulk density, tapped density and solubility as equally were affected by type and combination of carrier (P< 0.05). The hygroscopicity value of casein hydrolysates decreased significantly after the microencapsulation process. The antioxidant activity of the hydrolysates varies depending on type of enzyme. For example, ABTS and hydroxyl radical scavenging activities of pancreatin hydrolysates were higher than alcalase types (P< 0.05). The combination of maltodextrin and gum Arabic showed the best effect in maintaining of ABTS radical scavenging activity (92.72-94.93%), DPPH (98.47-98.94%), hydroxyl radical scavenging activity (88.59-94.95%), reducing power (98.94-99.65%), Fe2+ chelating activity (98.38-98.61%) and Cu2+ chelating activity (82.86-98.12%). The images of the electron microscope showed the presence of particles with different size distribution and wrinkles. In addition, the samples produced with gum Arabic had a larger particle size than maltodextrin. Finally, the results of this study showed the effectiveness of spray-drying process on the production of microencapsulated hydrolysates with desired physical, stability and antioxidant properties. 

Page 1 from 1