Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Changes In Gluten Proteins During Dough Formation
Initially, gluten is formed when flour and water are mixed together. The proteins in the flour, glutenin and gliadin cross link, using water as a vehicle to form gluten. Enhancing this gluten structure is important relative to developing a gas retaining structure in the chapati/bread. When the hydrated bread flour is mixed and kneaded, the gluten proteins orient themselves aligns and partially unfolded. This enhances hydrophobic interaction and formation of disulphide bridges through -S-S- interchange reactions. A 3-dimensional viscoelastic protein network is established, as the initial gluten particles transform into this membrane (film), thus serving to entrap starch granules and other flour components. Cleavage of disulphide bridges by reducing agents such as cysteine, destroys the cohesive structure of hydrated gluten and bread dough ; the addition of agents such as bromates, increase toughness and elasticity. "Strong" flours from certain wheat varieties require long mixing time and give very cohesive dough. "Weak flours" are less effective and gluten network breaks down when the energy or duration of mixing exceeds a certain level, probably because of -S-S- bonds are ruptured (especially in absence of air).
Dough strength appears to be related to a large content of high molecular weight glutenins including totally insoluble "residue proteins". From experiments with "reconstituted" wheat flours of varying gliadin and glutenin ratios, it can be postulated that the glutenins are responsible for the elasticity, cohesiveness and mixing tolerance of dough whereas gliadins facilitate fluidity, extensibility and expansion of the dough, thus contributing to a larger bread loaf volume. A proper balance of the proteins is essential for bread making. Excessive cohesion (glutenins) inhibit \the expansion of trapped CO2 bubbles during fermentation, the rise of the dough and the subsequent presence of open air cells in the bread crumb. Excessive extensibility (gliadins) results in gluten films that are weak and permeable; thus retention of CO2 is poor and dough collapse may occur.
Ventilation of Tracheal System – Passive Suction Ventilation Many active insects and insects that live in environments where water is scarce cannot depend on diffusion alone t
Mosaic Endosperm - Variants of Endosperm In some plants patches of two different colors appear in the tissues of the endosperm providing a mosaic design. In maize, red and whi
Digestion of Carbohydrates Digestion of food starts in the mouth itself by the action of enzyme salivary amylase and the carbohydrates present in the food, particular
How Sedentary or light activity lifestyles affects Physical Activity? These people have occupations that do not demand much physical effort, we not required to walk long distan
Q. What are the cells responsible for the production of antibodies? The cells that produce antibodies that is the cells of the humoral immune system are the B lymphocytes (B ce
Processing of roughage Roughages constitute the bulk of the ration of farm animals and these include green fodder (leguminous and non-leguminous), grasses, and various crop re
Floristic Composition - Qualitative Characters One of the important qualitative characteristics of a community is its floristic composition. This broadly refers to the kind o
Determine what the abnormal levels of AFP signal Abnormal levels of AFP may signal the following: Open neural tube Defect (ONTD) Down syndrome Other chromosoma1
Little lipophilic (lipid-soluble) hormones distribute across the plasma membrane and then interact with intracellular receptors in the nucleus/cytosol. The receptor
What is the Importance of biotin Biotin is involved in a number of important metabolic reactions, probably as coenzymes. Deficiency symptoms are manifest as degenerative cha
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd