The thermal stability, structural changeability, and aggregability of glutenin and gliadin proteins induced by wheat bran dietary fiber

2019 ◽  
Vol 10 (1) ◽  
pp. 172-179 ◽  
Author(s):  
Sen Ma ◽  
Wen Han ◽  
Li Li ◽  
Xueling Zheng ◽  
Xiaoxi Wang

Wheat bran dietary fiber (WBDF) has been reported to be responsible for the low quality of whole wheat flour products due to its destructive effect on the gluten matrix.

BMC Chemistry ◽  
2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Chenling Qu ◽  
Qiankui Yang ◽  
Lina Ding ◽  
Xueke Wang ◽  
Shengqiang Liu ◽  
...  

AbstractIn order to stabilize the whole wheat flour and extend its shelf life, microwave was employed to heat the wheat bran to inactivate the lipase in this paper. The effects of microwave heating of wheat bran on the lipase activities, gluten properties, dough properties and storage stability of the stabilized whole wheat flour, and the quality of steamed bread made of stabilized whole wheat flour were investigated. Furthermore, molecular docking was applied to interpret the mechanism. The results showed that microwave can reduce lipase activity, maintain the quality of whole wheat flour dough and steamed bread, and retard rancidity. The molecular docking results displayed that the conformation of the amino acids chains near the lipase catalytic center changed, which made the substrate difficult to enter the catalytic center and prevented the hydrolysis of the fat substrate.


Author(s):  
Marko Jaukovic ◽  
Veselinka Zecevic ◽  
Slavica Stankovic ◽  
Vesna Krnjaja

Deoxynivalenol (DON) is one of several mycotoxins produced by certain Fusarium species that frequently infect wheat, corn, rice, oats, barley and other grains in the field or during storage. DON affects animal and human health causing vomiting, acute temporary nausea, diarrhea, abdominal pain, headache, dizziness and fever. The objective of this study was to evaluate the natural occurrence of deoxynivalenol (DON) in white wheat flour, whole wheat flour and wheat bran. In this study, a total of 75 white wheat flour, whole wheat flour and wheat bran samples were collected in the period of 2016-2017. All samples were analyzed for DON by enzymelinked immunosorbent assay. DON was detected in 23 out of 45 white wheat flour samples (51.11%), at levels ranging from 99 ?g/kg to 440 ?g/kg. Out of 15 whole wheat flour samples, 14 were contaminated by DON (93.33%), at levels ranging from 98 ?g/kg to 479 ?g/kg. The maximum contamination level of DON (2,790 ?g/kg) in this study was found in wheat bran. Presence of DON was detected in all 15 samples of wheat bran (100%). These results suggest a high percentage of contaminated samples, especially among wheat bran samples, which raises a risk for consumers of wheat bran and the need to monitor final products before consumption.


Habitation ◽  
2007 ◽  
Vol 11 (3) ◽  
pp. 123-132 ◽  
Author(s):  
Patrick V. Veillard ◽  
Carmen Moraru ◽  
Michele H. Perchonok ◽  
Jozef L. Kokini

2013 ◽  
Vol 7 (4) ◽  
pp. 806-813 ◽  
Author(s):  
Stefania Valenzano ◽  
Vincenzo Lippolis ◽  
Michelangelo Pascale ◽  
Agostino De Marco ◽  
Chris M. Maragos ◽  
...  

2021 ◽  
pp. 130038
Author(s):  
Sen Ma ◽  
Zhen Wang ◽  
Xingfeng Guo ◽  
Fengcheng Wang ◽  
Jihong Huang ◽  
...  

2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Vira Drobot ◽  
Anastasiya Semenova ◽  
Jelyzaveta Smirnova ◽  
Larisa Mykhonik

The paper gives a brief overview of the current nutritional status of the Ukrainian population and describes useful buckwheat properties. The objective of the paper is to study the effect of buckwheat processing products (flour and flakes) on the technological process and quality of bread made from whole-wheat flour. This paper describes and analyzes research data on the rheological properties of dough samples which were determined by farinograph and amylograph. Investigation of structural and mechanical properties of dough showed an increase in water-absorbing capacity in all samples when adding buckwheat products. Moreover, dough made with buckwheat flakes has a lower value of mixing tolerance index (by 47 %) than dough made from buckwheat flour, and a higher valorimetric value (by 20 %). Determination of dough properties by amylogram has shown that a sample containing buckwheat flakes has a higher maximum viscosity than a sample containing buckwheat flour. Determination of the gas-production and gas-retention capacity of dough is also presented, along with an analysis of the quality of finished products based on the results of laboratory baking tests. The samples of bread supplemented with buckwheat flakes have better shape stability (by 21 %), specific volume (by 12 %) and porosity (by 11 %) than bread made from buckwheat flour. The organoleptic evaluation of finished product quality has shown that bread supplemented with buckwheat flakes has a more fluffy-texture, elastic crumb and uniform porosity than bread made from buckwheat flour. Buckwheat flakes proved to have a better effect on parameters of the technological process and quality of bread when compared with buckwheat flour.


2020 ◽  
pp. 93-99

In Pakistan, wheat flour is mostly utilized for making flat breads locally called chapattis. Other uses of wheat flour are in bakery products manufacturing. It is an important constituent of daily diet of people. Shelf life of wheat flour is one of the most important factors for its quality determination. Wheat flour is often tainted with pathogenic fungal species and their toxic secondary metabolites called Mycotoxins. The present study was designed to make a comparative analysis of Microbiological quality (fungal load and total coliform count) and detection of aflatoxins in raw and branded whole wheat flour samples of Lahore Metropolitan city. Total 100 samples were collected for determination of fungal load, coliform and aflatoxins. The Standardized methods were applied to count the colony forming units of fungal species and total coliform bacteria respectively. The results indicated both branded and raw whole wheat flour groups were of good quality for human consumption. However, the microbiological quality of branded whole flour was better than raw whole wheat flour. There was a significant difference (P<0.05) in fungal load of raw and branded whole wheat flour. Similarly, coliform bacteria were only cultured form the samples of raw flour. In the last stage of study, aflatoxins level was analysed by using a commercially available kit. All the samples of both raw and branded whole wheat flours were negative for aflatoxins detection. The overall quality of raw and branded whole wheat flours in Lahore city is satisfactory for consumers.


Author(s):  
Georgeta STOENESCU ◽  
Violeta IONESCU ◽  
Ina VASILEAN ◽  
Iuliana APRODU

Mixolab is a device used to investigate the thermo-mechanical behaviour of the dough. The aim of the present study was to investigated the possibility of predicting the quality of the wheat based on the behaviour of the flour with different extraction rates. Our results indicated relationships in terms of water absorbtion capacity, dough stability, C3, C5, α and γ slopes between whole wheat flour and white and brown flours. Taking into account the obtained results we may conclude that Mixolab can be successfully used to predict the quality of the wheat used for obtaining industrial flours through the milling process.


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