scholarly journals Influence of Phosphorylation and Acetylation on Structural, Physicochemical and Functional Properties of Chestnut Starch

Polymers ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 172
Author(s):  
Chang Liu ◽  
Hejing Yan ◽  
Suwen Liu ◽  
Xuedong Chang

Chestnut is popular worldwide for its unique flavor, high eating quality and nutrition. Here, we evaluated the influence of phosphorylation and acetylation on the structural, physicochemical and functional properties of chestnut starch. Scanning electron micrographs showed the agglomeration of starch granules and the appearance of numerous dents on the starch granule surface under phosphorylation and acetylation. X-ray diffractograms confirmed that the modification treatments did not affect the C-type crystal pattern, but reduced the relative crystallinity of the chestnut starch, particularly phosphorylation. Moreover, modification improved the paste transparency of the starch. Differential scanning calorimeter analysis revealed that the gelatinization temperature and enthalpy of the starch decreased with the increasing substitution degree, particularly in phosphorylated starch. The Rapid Visco Analyser analysis demonstrated that phosphorylation could greatly improve the pasting properties of chestnut starch. In addition, phosphorylated and acetylated starch had a smaller amount of slowly digested starch and a larger amount of resistant starch relative to native chestnut starch. In conclusion, the functional and physicochemical properties of chestnut starch can be significantly improved through phosphorylation and acetylation, demonstrating its great application potential as a food additive.

2016 ◽  
Vol 5 (5) ◽  
pp. 67
Author(s):  
Victoria G. Aguilar-Raymundo ◽  
Jorge F. Vélez-Ruíz

Considering the nutritional and functional characteristics of chickpea, flours of two varieties of chickpea (“Blanco Noroeste” and “Costa 2004”) were prepared to know the effect of cooking. Thus the objective of this study was to compare their physicochemical and functional properties in both, raw and cooked flours. Physical properties of the grain, for the two varieties were similar, whereas the physicochemical and functional properties of the flours exhibited differences as a function of the variety and the processing. The chickpea cooked flours showed lower lightness and higher redness and yellowness with respect to raw flours. The proximal composition of cooked flours presented significant differences in fat (5.98% - 6.09%) and moisture contents (0.48% - 0.54%) with respect to raw flours. The particle size distribution determined for the raw and cooked flours samples, indicated a unimodal behavior with a wide distribution. The water absorption capacity and oil capacity showed significant difference among flour varieties. For pasting properties, a higher viscosity was measured for Costa 2004 (380 cP) and Blanco Noroeste (272 cP) raw flours, raw flour exhibited better pasting properties than cooked flours. 


Food Research ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 1896-19094
Author(s):  
E.M. Satmalawati ◽  
Y. Pranoto ◽  
D.W. Marseno ◽  
Y. Marsono

An environmentally friendly method for starch oxidation is recommended in order to replace harmful oxidizing chemical reagents. Ozone is an environmentally friendly oxidizing reagent that leaves no residue in the final product. Studies of starch modification using dissolved ozone are still lacking. This work aimed to increase the use value and improve native starch characteristics by evaluating carbonyl and carboxyl contents, pasting and functional properties, spectral Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) profiles, particle sizes, and scanning electron micrographs (SEM) of ozone-oxidized cassava starch. The results showed that dissolved ozone and starch slurry concentrations significantly affected oxidation degree, functional properties and caused a decrease in particle size and pasta viscosity of cassava starch. FTIR spectra significantly showed an increase in the intensity of the presence of the carbonyl group as a marker of starch oxidation. Further XRD diffraction also significantly showed changes in the relative crystallinity besides that there is a change in the surface morphology of the starch granules. Oxidized starch with a combination of 1.4 ppm dissolved ozone concentration and a starch slurry ratio of 1:10 produced higher swelling power (44.31%), solubility (0.88%), lower paste viscosity (6082.5 cP), and reconditioning relative crystallinity (10.44%). Overall, dissolved ozone successfully had powerful effects in oxidizing starch and can be applied for starch modification as an inexpensive and safe oxidizing agent.


2021 ◽  
pp. 108201322110627
Author(s):  
Fabian Ugwuona ◽  
Anthony Ukom ◽  
Bridget Ejinkeonye ◽  
Nwamaka Obeta ◽  
Maureen Ojinnaka

This study explored the possibilities of some selected flour blends vis-a-vis the physicochemical and functional properties of wheat flour. Ten flour blends from potato starch, cassava, maize and soybean flours and wheat flour were made and evaluated for physicochemical, functional and anti-nutritional properties. The range of proximate values were for moisture (3.76%–6.67%), protein (4.33–8.96%), ash (1.35–1.96%), fat (3.37–4.88%), fibre (1.22–1.89%) and carbohydrate (78.35–84.94%), whereas wheat flour had moisture (9.45%), protein (11.31%), ash (2.54%), fat (3.78%), fibre (1.31%) and carbohydrate (73.90%). Cyanogenic glucoside, saponion and tannin contents increased with increase substitution of cassava and soybean flours. Pasting temperatures of flour blends ranged from 69.03°C to 78.83°C, while wheat flour had 78.05°C. Peak, hot paste, breakdown, setback and cold paste viscosities were 1514–2822, 1036–1597, 487–1225, 580–884 and 1616–2461 cp in flour blends compared to 2361, 1360, 1001, 1079 and 2439 cp of wheat flour. Substitutions with soy flour decreased the peak, hot paste, breakdown and cold paste viscosities but increased the pasting temperatures. L*, a* and b* values ranged from 78.56 to 87.65, −0.34 to 0.71 and 10. 95 to 13.50 in flour blends while the wheat flour varied significantly at 2361.00, 1360.00 and 1001.00. The nutritional and pasting properties of some of flour blends were closely related to wheat flour and may be used for bakery requirements.


Food Research ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 44-52
Author(s):  
Hasmadi A. ◽  
Harlina L. ◽  
Jau-Shya Lee ◽  
A.H. Mansoor ◽  
M.H.A. Jahurul ◽  
...  

This work aimed to determine the physicochemical and functional properties of starch cassava grown in two different locations in Sabah, namely Tawau and Semporna. In this study, the starch of the cassava was extracted using a wet method and analysed for its physicochemical and functional properties. The total starch content of cassava grown in Semporna showed a higher value (61.21 g/100 g) compared to the sample from Tawau (51.77 g/100 g). No significant difference (p>0.05) observed for starch yield extracted from these two locations. However, there was a significant difference (p<0.05) showed for total starch, resistant starch and amylose content. The amylose content of starch isolated from Semporna (23.16%) was higher than from Tawau (13.87%). Scanning electron microscope revealed that starch isolated from both locations had smooth surfaces with some granules spherical, elongated and irregular in shape. Cassava starch from Semporna exhibited a high value of swelling power (6.85%) compared to Tawau (4.07%), and they were significantly different (p<0.05). The solubility values of the starch samples from Tawau and Semporna were 28.48% and 24.34%, respectively. The pH was observed to be lower for cassava starch isolated from Tawau (4.80) than for starch obtained from Semporna (5.49). The water absorption capacity of starch from Semporna absorbed slightly more water than starch from Tawau, with values of 76.51% and 63.64%, respectively. Pasting properties results showed no significance for all profiles measured except for setback viscosity. No significant differences (p>0.05) were observed for all gelatinisation and retrogradation properties. This study suggests that location influenced the physical, chemical and functional properties of cassava’s starch.


Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1718
Author(s):  
Meng Wang ◽  
Yanwen Wu ◽  
Yongguo Liu ◽  
Jie Ouyang

This work examined the effect of ultrasound and microwave treatments, separate and in combination, on the physicochemical and functional properties of chestnut starch. The results revealed that the ultrasonic-microwave (UM) and microwave-ultrasonic (MU) dually modified samples exhibited more severe surface damage, weaker birefringence, and lower relative crystallinity and gelatinization enthalpy than the native and single-treated starches. The UM samples showed the highest oil absorption capacity, and the MU samples showed the highest water absorption capacity and the best freeze-thaw stability (five cycles) among all samples. The swelling power, peak, trough, final, and breakdown viscosities, and pasting temperature all decreased regardless of single or dual modification. This study provides a reference for potential industrial applications of ultrasound and microwave treatments for the modification of chestnut starch.


2019 ◽  
Vol 32 ◽  
pp. 100452
Author(s):  
Zihan Xue ◽  
Qiqi Ma ◽  
Qingwen Guo ◽  
Ramesh Kumar Santhanam ◽  
Xudong Gao ◽  
...  

2021 ◽  
pp. 2100092
Author(s):  
Fredy Morales‐Trejo ◽  
Daniel Trujillo‐Ramírez ◽  
Eleazar Aguirre‐Mandujano ◽  
Consuelo Lobato‐Calleros ◽  
E. Jaime Vernon‐Carter ◽  
...  

LWT ◽  
2014 ◽  
Vol 59 (1) ◽  
pp. 348-355 ◽  
Author(s):  
Khalid Gul ◽  
Charanjit Singh Riar ◽  
Anu Bala ◽  
Mandeep Singh Sibian

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