scholarly journals The Influence of the Addition of Rosehip Powder to Wheat Flour on the Dough Farinographic Properties and Bread Physico-Chemical Characteristics

2021 ◽  
Vol 11 (24) ◽  
pp. 12035
Author(s):  
Nicoleta Vartolomei ◽  
Maria Turtoi

An in-depth analysis of wheat flour (WF) substituted with 0.5–2.5% rosehip powder (Rp) concerning the proximate composition, dough farinographic properties, and bread physico-chemical characteristics was performed. The purpose of this study was to investigate whether the use of Rp as a natural alternative for synthetic ascorbic acid in breadmaking was appropriate. A sample of wheat flour with an ascorbic acid addition of 2 mg/100 g was also used. Rp showed higher ash, carbohydrates, and fibre content, as well as lower moisture and protein content compared to wheat flour, and a vitamin C content of 420 ± 16.09 mg/100 g. A proximate composition analysis revealed a decrease in moisture, protein, and wet gluten, and an increase in ash, carbohydrates, and fibres for the flour mixtures compared with WF. Farinographic properties were positively influenced by the Rp addition and the high fibre content in the flour mixtures. Water absorption increased from 58.20% (WF) to 61.90% (2.5% Rp). Dough stability increased for the 0.5–1.0% Rp addition, then slightly decreased. The physico-chemical properties of bread prepared from flour mixtures showed a significant increase in height: 100.10 ± 0.14 mm (WF)–115.50 ± 0.14 mm (1.5% Rp), specific volume: 142.82 cm3/100 g (WF)–174.46 cm3/100 g (1.5% Rp), moisture: 41.81 ± 0.40% (WF)–43.92 ± 0.15% (2.0% Rp), and porosity: 87.75 ± 1.06% (WF)–89.40 ± 0.57% (2.5% Rp). The results indicated that the Rp used in breadmaking to replace synthetic ascorbic acid could be suitable.

2020 ◽  
Vol 6 (4) ◽  
pp. 21576-21597
Author(s):  
Emmanuelle Ferreira Requião Silva ◽  
Bruna Rosa da Silva Santos ◽  
Geovani Cardoso Brandão ◽  
Mariângela Vieira Lopes Silva ◽  
Erik Galvão Paranhos Silva ◽  
...  

Author(s):  
Р.Х. КАНДРОКОВ ◽  
С.Е. ТЕРЕНТЬЕВ ◽  
Н.В. ЛАБУТИНА ◽  
М.Ш. БЕГЕУЛОВ ◽  
И.Г. БЕЛЯВСКАЯ ◽  
...  

В России наблюдается повышенный интерес к продуктам питания, включающим нетрадиционное сырье. Спрос на продукты с добавкой семян конопли (Cannabis sativa L.) обусловлен их питательной ценностью и низкой аллергенностью. Исследованы химические и физико-химические показатели пшенично-конопляной муки, полученной из помольной смеси зерна яровой пшеницы сорта Радмира и семян конопли сорта Сурская в соотношении соответственно 95 : 5, 92,5 : 7,5 и 90 : 10%. В качестве контрольного образца была пшеничная мука без добавок. Размол помольных пшенично-конопляных смесей различного соотношения и зерна пшеницы проводили на мельницах лабораторного помола (МЛП-4) с нарезными (драные системы) и микрошероховатыми вальцами (размольные системы). Исследование химических и физико-химических свойств образцов пшенично-конопляной и пшеничной муки проводили на инфракрасном анализаторе SpectraStar 2500 XL. Установлено, что добавление семян конопли в помольную смесь существенно снижает выход пшенично-конопляной муки по сравнению с выходом пшеничной муки (при добавке 5–7,5% семян конопли выход снижается на 4,3–4,4%, а при добавке 10% семян конопли – на 10,6%), однако повышается содержание жира и белка во всех потоках пшенично-конопляной муки, полученной как с драных, так и с размольных систем. По сравнению с содержанием жира и белка в муке из зерна пшеницы, составившим 1,12 и 11,57% соответственно, при добавлении 5% семян конопли в помольную пшенично-конопляную зерновую смесь средневзвешенное содержание жира в пшенично-конопляной муке составило 3,76%, а содержание белка – 12,74%, при добавлении 7,5% конопли в помольную смесь средневзвешенное содержание жира в пшенично-конопляной муке составило 4,35%, а белка – 12,7%, при добавлении 10% конопли в помольную смесь средневзвешенное содержание жира в пшенично-конопляной муке составило 4,97%, а содержание белка – 12,4%. Повышение содержания жира и белка в пшенично-конопляной муке будет способствовать повышению пищевой ценности хлебобулочного изделия из нее. Increased interest in food products, including non-traditional raw materials, is observe among the population of Russia. The demand for products with the addition of hemp seeds (Cannabis sativa L.) is due to their nutritional value and low allergenicity. Chemical and physico-chemical parameters of wheat-hemp flour obtained from a grind mixture of Radmira spring wheat grain and Surskaya hemp seeds in the ratio: 95 : 5, 92,5 : 7,5 and 90 : 10%, respectively, were investigated. Wheat flour without additives was use as a control sample. Grinding of grind wheat-hemp mixtures of various ratios and wheat grains was carried out in laboratory grind mills with rifled (torn systems) and micro-roughened rollers (grinding systems). The study of chemical and physico-chemical properties of wheat-hemp and wheat flour samples was carried out on the SpectraStar 2500 XL infrared analyzer. It was found that the addition of hemp seeds to the grind mixture significantly reduces the yield of wheat-hemp flour compared with the yield of wheat flour (with the addition of 5–7,5% of hemp seeds, the yield decreases by 4,3–4.4%, and with the addition of 10% of hemp seeds – by 10,6%), however increases the fat and protein content in all streams of wheat-hemp flour obtained from both torn and grinding systems. Compared with the fat and protein content in wheat flour, which amounted to 1,12 and 11,57% respectively, when adding 5% hemp to the wheat-hemp grain mixture, the weighted average fat content in wheat-hemp flour was 3,76%, and the protein content was 12,74%, when adding 7,5% hemp to the grind mixture, the weighted average fat content in wheat-hemp flour was 4,35%, and protein – 12,7%, and when adding 10% the weighted average fat content in wheat-hemp flour in the grind mixture was 4,97%, and the protein content was 12,4%. An increase in the fat and protein content in wheat and hemp flour will contribute to an increase in the nutritional value of a bakery product made from it.


2019 ◽  
Vol 3 (02) ◽  
pp. 176-184
Author(s):  
Amit Kotiyal ◽  
Siddharth Shankar Bhatt ◽  
Jitendra Kumar ◽  
Dinesh Chandra Dimri ◽  
Narender Singh Mehta

The objective of this study was to compare the physico-chemical properties of 10 apple cultivars grown in mid hills of India. Fruit weight, volume, size, total soluble solids (T.S.S.), total sugars, titratable acidity and ascorbic acid content were measured in the cultivars Aurora, Brookfield, Braeburn, Galaxy, Azetec, Scarlet Gala, Marini Red, Jonagold, Royal Gala and Royal Delicious. The results showed significant differences in physico-chemical attributes of apple cultivars. Among all the cultivars the maximum fruit size (50.66 mm length, 74.73 mm diameter) and fruit weight (170.12 g) were observed in cv. Royal Delicious, while the minimum fruit size (40.52 mm length, 53.03 mm diameter) and weight (110.97 g) were measured in Azetec and Aurora, respectively. The highest volume (196.79 ml) of fruit was registered in Royal Delicious in comparison to the minimum (125.75 ml) in Aurora. The maximum T.S.S. (14.27 °B) and acidity (0.717%) was noticed in Scarlet Gala and Marini Red, respectively. While the minimum T.S.S. and acidity was observed in Marini Red (11.20 °B) and Azetec (0.186%). The ascorbic acid varied from 6.07 mg/100 g in Royal Gala to 9.86 mg/100 g in Braeburn, whereas the total sugar ranged 11.36% in Royal Gala to 7.06% in Jonagold.


2016 ◽  
Vol 1 (01) ◽  
pp. 88-91
Author(s):  
Ram Kumar ◽  
M. M. Syamal ◽  
R. Chandra ◽  
Vishwanath .

The present investigation was conducted on different genotypes of aonla to assess the variability in physico- chemical properties of fruits. These plants were planted in the campus of Banaras Hindu University, Varanasi, U.P. The experiment was arranged in randomized block design with 12 treatments and 4 replications. The observations recorded during experiment showed that genotype 6 and 7 were found most superior, in terms of physico-chemical properties of fruits. The maximum pulp content (88.25%), pulp: stone ratio (8.24) and ascorbic acid content (679.25 mg/ 100g) was recorded in genotype 7. Whereas, highest TSS (12.18%), lowest acidity (1.80%) and maximum sugar (3.50%, 2.50% and 6.0% reducing, non-reducing and total sugar respectively) was found in genotype 6.


RSC Advances ◽  
2015 ◽  
Vol 5 (99) ◽  
pp. 81429-81437 ◽  
Author(s):  
Gibin George ◽  
S. Anandhan

Physico–chemical characteristics of cobalt oxide nanofibres were tailored by varying the sacrificial polymeric binder in sol–gel electrospinning.


2020 ◽  
Vol 74 (3) ◽  
pp. 196-198
Author(s):  
Lydie Moreau ◽  
Véronique Breguet Mercier

An interdisciplinary project regarding the effect of ascorbic acid on bread dough's physico-chemical properties was proposed to bachelor students in chemistry and food sciences. Such an approach was proposed to develop both scientific and soft skills, in order to prepare students for their future working environment. Together, students deepened their knowledge regarding food science and chemistry. They were then able to plan and design experiments demonstrating the impact of gluten network formation and ascorbic acid influence onto bread dough and finished product characteristics. This way of teaching was very appreciated by students, nevertheless it highlighted the fact that the professors' investment was considerably high, and that good organization, alignment and preparation prior to the start of this project is key.


Antioxidants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 221 ◽  
Author(s):  
Angelo Giuffrè

Reggio Calabria province (South Italy) is known for being almost the only area of cultivation of the bergamot fruit, grown principally for its essential oil, but today much studied for the health benefits of its juice. The biometrics and physico-chemical properties of the three (Citrus bergamia Risso) existing genotypes namely Castagnaro, Fantastico and Femminello were studied during fruit ripening from October to March. Castagnaro cultivar had the biggest and heaviest fruit during this harvest period. °Brix (7.9–10.0), pH (2.2–2.8) and formol number (1.47–2.37 mL NaOH 0.1 N/100 mL) were shown to be influenced by both the genotype and harvest date. Titratable acidity (34.98–59.50 g/L) and vitamin C (ascorbic acid) (341–867 g/L) decreased during fruit ripening. The evolution of flavonoids such as neoeriocitrin, naringin, neohesperidin, brutieridin and melitidin was studied both in bergamot juice and in the bergamot cloudy juice which is the aqueous extract of bergamot during fruit processing. Bergamot cloudy juice contained a higher quantity of flavonoids compared to the juice. This study gives important information regarding the cultivar and the harvest date for producers who want to obtain the highest juice quantity or the highest juice quality from the bergamot fruit.


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