scholarly journals Effect of milk proteins aggregation using Transglutaminase and Maillard reaction on Ca2+ milk gel

2018 ◽  
Vol 3 (1) ◽  
pp. 63-67
Author(s):  
Hassan Mahdi Alfayadh ◽  
Mohammed Latif Hamk ◽  
Kocher Jamal Ibrahim ◽  
Jasim Mohammed Al-Saadi
Keyword(s):  
Maillard Reaction ◽  
Whey Proteins ◽  
Milk Proteins ◽  
Gel Strength ◽  
Water Holding Capacity ◽  
Gel Properties ◽  
Water Holding

Effect of transglutaminase, Maillard reaction induced crosslinking and the combination of transglutaminase and Maillard reaction induced crosslinking between whey proteins and caseins in milk on calcium milk gel properties were investigated. Treatment of milk with transglutaminase, Maillard reaction, and transglutaminase + Maillard reaction cause to the appearance of new high MW protein bands.  Water holding capacity, gel strength and sensory scores of gel samples increased and spontaneous whey separation decreased in calcium-induced milk gel made from transglutaminase and combination of transglutaminase and Maillard reaction treated milk compare with calcium-induced milk gel made from untreated milk alone.   

scholarly journals A Study of the Synergistic Interaction of Konjac Glucomannan/Curdlan Blend Systems under Alkaline Conditions

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3543
Author(s):  
Weijian Ye ◽  
Bowen Yan ◽  
Jie Pang ◽  
Daming Fan ◽  
Jianlian Huang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Loss Modulus ◽  
Physical Property ◽  
Konjac Glucomannan ◽  
Gel Strength ◽  
Water Holding Capacity ◽  
Low Frequencies ◽  
Ideal Mixing ◽  
Alkaline Conditions ◽  
Water Holding

To improve the gelation performance of konjac glucomannan (KGM) thermo-irreversible gel in the condition of alkaline, this study investigated the interactions between KGM and curdlan (CUD) in terms of the sol state and gelation process. The apparent viscosity, rheological properties during heating and cooling, thermodynamic properties, gelation properties and water holding capacity of KGM/CUD blend systems in an alkaline environment were studied using physical property testing instruments and methods. The results showed that the viscosity of the KGM/CUD blended solution was greater than the value calculated from the ideal mixing rules in the condition of alkaline (pH = 10.58). As the proportion of CUD in the system increased, the intersection of storage modulus (G’) and loss modulus (G”) shifted to low frequencies, the relaxation time gradually increased, and the degree of entanglement of molecular chains between these two components gradually increased. The addition of CUD helped decrease the gelation temperature of KGM, increased the gelation rate and inhibited the thinning phenomenon of KGM gels at low temperatures (2–20 °C). The addition of CUD increased the hardness and gel strength of KGM but did not significantly improve the water holding capacity of the KGM/CUD blend gel. The process of mixing KGM and CUD improved the thermal stability of the gel. In summary, KGM/CUD exhibited excellent compatibility under alkaline conditions, and the blend systems produced a “viscosifying effect”. KC8 and KC5 show better thermal stability, low temperature resistance and gel strength compared to KGM. This blended gel can be used as a structural support material to provide reference for the development of konjac bionic vegetarian products.

scholarly journals Sensory and Physicochemical Characteristics of Manyung (Arius thalassinus) Kekian High Fiber with the Addition of Eucheuma cottonii Seaweed

2020 ◽  
Vol 36 (1) ◽  
pp. 1
Author(s):  
Meisya Asri Widiyanti ◽  
Lukita Purnamayati ◽  
Romadhon Romadhon
Keyword(s):  
Protein Content ◽  
Water Content ◽  
Dietary Fiber ◽  
Quality Criteria ◽  
Physicochemical Characteristics ◽  
Gel Strength ◽  
Water Holding Capacity ◽  
High Fiber ◽  
Water Holding ◽  
Eucheuma Cottonii

Kekian is a processed product from fish meat added with seasoning, fillers and binders then formed and wrapped with tofu skin. Kekian has a low dietary fiber so that the addition of seaweed porridge can be used to increase the content of dietary fiber in kekian. The purpose of this study was to determine the effect of adding different seaweed porridge (Eucheuma cottonii) to characteristics of manyung (Arius thalassinus) kekian and determine the best seaweed porridge to the best kekian fish characteristics. The research method used was experimental laboratories using a completely randomized design of one factor is concentration of the addition of porridge (0%, 20%, 30% and 40%) with 3 replications. Sensory value data were analyzed by the Kruskal-Wallis test, while tests of dietary fiber, air content, protein content, water holding capacity and gel strength were analyzed using ANOVA. The results showed that the difference in the addition of seaweed porridge had a significant effect (P <0.05) on sensory values, dietary fiber, water content, protein content, water holding capacity and gel strength. Manyung kekian with the addition of E. cottonii porridge 20% is the best product with quality criteria: sensory of 7.61 <µ <7.86, dietary fiber of 6.03%, water content of 69.31%, protein content by 11.49%, Water Holding Capacity by 39.69% and gel strength by 773.82 kgf.

scholarly journals Utilization of Carp (Cyprinus carpio) as Surimi For Sausage Manufacturing

2019 ◽  
Vol 22 (2) ◽  
pp. 366-374
Author(s):  
Eveline Eveline ◽  
Joko Santoso ◽  
Magnarai Huangdinata
Keyword(s):  
Moisture Content ◽  
Cyprinus Carpio ◽  
Gel Strength ◽  
Physical Characteristics ◽  
Water Holding Capacity ◽  
Product Diversification ◽  
Filler Concentration ◽  
Food Ingredients ◽  
Carp Cyprinus Carpio ◽  
Water Holding

Carp (Cyprinus carpio) is a freshwater fish with high economic value and good farming potential. Carp-based product diversification could be done by using it as food ingredients such as surimi in sausage manufacture. This research was aimed to evaluate sausage produced from carp surimi by varying washing frequency and tapioca filler concentration. Five washing frequencies (1; 2; 3; and 4 times) and three tapioca filler concentrations (2; 3; and 4%) were compared. The study showed 1 time washing frequency gave better surimi physical characteristics (57.40% yield; 73.76% water holding capacity; 26.64% expressible moisture content, 821.92 g.cm gel strength; 54.45% whiteness) and chemical characteristic (78.00% moisture content and 6.34% salt soluble protein) compared to other washing frequencies. Based on the organoleptic test, 2% tapioca was the selected filler concentration. Selected surimi sausage had better physical, chemical and sensori characteristics than commercial sausage. The physical characteristics of the selected sausage were 70.46% water holding capacity; 24.58% expressible moisture content; 78.64% whiteness; 4346.70 g.cm gel strength; 101.23 g hardness; 0.98 g springiness; and 43.96 g chewiness. While the chemical characteristics of that sausage were 75% water; 1.35% ash; 11.51% protein; 4.46% fat; and 7.63% carbohydrate. The sensory scores of the sausage evaluated were color 0.44, aroma 0.60; taste 1.16; and springiness 1.86.

scholarly journals The decrease in the IgG-binding capacity of intensively dry heated whey proteins is associated with intense Maillard reaction, structural changes of the proteins and formation of RAGE-ligands

2016 ◽  
Vol 7 (1) ◽  
pp. 239-249 ◽  
Author(s):  
Fahui Liu ◽  
Małgorzata Teodorowicz ◽  
Martinus A. J. S. van Boekel ◽  
Harry J. Wichers ◽  
Kasper A. Hettinga
Keyword(s):  
Heat Treatment ◽  
Maillard Reaction ◽  
Structural Changes ◽  
Binding Capacity ◽  
Whey Proteins ◽  
Milk Proteins ◽  
Chemical Modifications ◽  
Milk Processing ◽  
Igg Binding

Heat treatment is the most common way of milk processing, inducing structural changes as well as chemical modifications in milk proteins.

scholarly journals Preparation and Characterization of Emulsion Gels from Whole Faba Bean Flour

Foods ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 755
Author(s):  
Zhong-Qing Jiang ◽  
Jing Wang ◽  
Frederick Stoddard ◽  
Hannu Salovaara ◽  
Tuula Sontag-Strohm
Keyword(s):  
Faba Bean ◽  
Gel Strength ◽  
Water Holding Capacity ◽  
Plant Oil ◽  
Processing Methods ◽  
Gel Texture ◽  
Emulsion Gel ◽  
Bean Flour ◽  
Pre Treatment ◽  
Water Holding

Faba bean protein has good functionalities, but it is little used in the food industry. This study identified a challenge from unfavourable starch gelation when utilizing faba bean for producing protein-based emulsion gel foods, and developed processing methods to overcome that. Two types of protein-based emulsion gel foods, namely yogurt and tofu analogue products, were prepared. The processing methods in this study involved steps of thermal pre-treatment of the beans, dehulling, milling, adding plant oil, homogenization, prevention of starch gelation, and inducing protein gelation. Two methods for preventing starch gelation were studied, namely starch removal and hydrolysis. The gel texture, water-holding capacity, and structural properties of the gel products were evaluated. Both starch-gelation prevention methods produced yogurt and tofu analogue products having typical emulsion gel properties. Hydrolysis of starch was favourable for producing the yogurt analogue, because the hydrolysate compounds improved the gel strength and viscosity. Moreover, it utilized the whole flour, meaning all the nutrients from the cotyledon were used and no side-stream was created. In contrast, starch removal was slightly better than hydrolysis for producing the tofu analogue, because the hydrolysate lowered the gel strength and water-holding capacity of the products. It is both possible and ecologically sustainable to utilize whole faba bean flour for making emulsion gel products.

Effects of microwave heating on the gelation properties of heat-induced Alaska Pollock (Theragra chalcogramma) surimi

2018 ◽  
Vol 24 (6) ◽  
pp. 497-506 ◽  
Author(s):  
Xiangyu Liu ◽  
Dandan Feng ◽  
Lei Ji ◽  
Tao Zhang ◽  
Yong Xue ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Formation Rate ◽  
Gel Strength ◽  
Water Holding Capacity ◽  
Water Bath ◽  
Theragra Chalcogramma ◽  
Gel Formation ◽  
Scanning Calorimetry ◽  
Water Bath Heating ◽  
Water Holding

In the present study, we examined the properties of Alaska Pollock ( Theragra chalcogramma) surimi gels in response microwave heating at different powers (300, 400, or 500 W) and time (10, 20, or 30 min). The surimi gels heated by a microwave at 300 W for 10 min showed the highest gel strength and water-holding capacity. Increasing the power and time resulted in decreases in both the gel strength and water-holding capacity. The gel formation rate of microwave-heated gels was significantly higher than that produced by water bath heating. In addition, differential scanning calorimetry indicated that microwave heating caused less damage to the native structures of myosin and actin than water bath heating. Microstructure studies revealed that microwave heating contributed to the formation of a denser and stronger frame of the surimi gels. Raman spectroscopy indicated that the degree of the secondary structure denaturation caused by microwave heating was less than that induced by water bath heating. Thus, the results demonstrated that microwave heating is a promising method to enhance the gelation properties of surimi.

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