scholarly journals Impacts of Hydrothermal Treatments on the Morphology, Structural Characteristics, and In Vitro Digestibility of Water Caltrop Starch

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4974
Author(s):  
Jia-Lin Liu ◽  
Po-Ching Tsai ◽  
Lih-Shiuh Lai
Keyword(s):  
Structural Characteristics ◽  
Starch Content ◽  
In Vitro Digestibility ◽  
Starch Granules ◽  
X Ray Diffraction ◽  
Relative Crystallinity ◽  
X Ray ◽  
Heat Moisture Treatment ◽  
Moisture Treatment

The influence of hydrothermal treatments on the structural properties and digestibility of water caltrop starch was investigated. Scanning electron microscopy (SEM) showed some small dents on the surface of starch granules for samples treated with heat moisture treatment (HMT), but not for samples treated with annealing (ANN) which generally showed smoother surfaces. The gelatinization temperature of starch was generally increased by hydrothermal treatments, accompanied by a trend of decreasing breakdown viscosity. These results implied the improvement of thermal and shearing stability, particularly for HMT in comparison to ANN. After being cooked, the native and ANN-modified water caltrop starch granules were essentially burst or destroyed. On the other hand, the margin of starch granules modified by HMT and dual hydrothermal treatments remained clear with some channels inside the starch granules. X-ray diffraction revealed that the crystalline pattern of water caltrop starch changed from the CA-type to the A-type and the relative crystallinity reduced with increasing moisture levels of HMT. Results of ANN-modified water caltrop starch were mostly similar to those of the native one. Moreover, water caltrop starch modified with HMT20 and dual modification contained a pronouncedly higher resistant starch content. These results suggested that HMT, ANN, and dual modification effectively modified the functional properties of water caltrop starch.

scholarly journals Heat-Moisture Treatment Further Reduces In Vitro Digestibility and Enhances Resistant Starch Content of a High-Resistant Starch and Low-Glutelin Rice

Foods ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2562
Author(s):  
Zhiyuan Li ◽  
Dongshu Guo ◽  
Xiao Li ◽  
Zhaocheng Tang ◽  
Xitie Ling ◽  
...  
Keyword(s):  
Resistant Starch ◽  
Kidney Diseases ◽  
Starch Content ◽  
Rice Flour ◽  
Targeted Mutagenesis ◽  
In Vitro Digestibility ◽  
Food Ingredient ◽  
Heat Moisture Treatment ◽  
Moisture Treatment

A novel rice germplasm sbeIIb/Lgc1 producing grains rich in resistant starch (RS) but low in glutelin has been developed through CRISPR/Cas9-mediated targeted mutagenesis for its potential benefits to patients with diabetes and kidney diseases. In this study, a hydrothermal approach known as heat-moisture treatment (HMT) was identified as a simple and effective method in reinforcing the nutritional benefits of sbeIIb/Lgc1 rice. As a result of HMT treatment at 120 °C for 2 h, significant reductions in in vitro digestibility and enhancements in RS content were observed in sbeIIb/Lgc1 rice flour when the rice flour mass fraction was 80% and 90%. The low-glutelin feature of sbeIIb/Lgc1 rice was not compromised by HMT. The potential impacts of HMT on a range of physicochemical properties of sbeIIb/Lgc1 rice flour have also been analyzed. HMT resulted in a darker color of rice flour, alteration in the semi-crystalline structure, an increase in gelatinization temperatures, and reductions in the pasting viscosities as the moisture content increased. This study provides vital data for the food industry to facilitate the application of this dual-functional rice flour as a health food ingredient.

scholarly journals The effect of heat-moisture treatment conditions on the structure properties and functionalities of potato starch

10.5219/1647 ◽  
2021 ◽  
Vol 15 ◽  
pp. 824-834
Author(s):  
Chunli Deng ◽  
Oksana Melnyk ◽  
Yanghe Luo
Keyword(s):  
Potato Starch ◽  
Hollow Structure ◽  
Hydroxyl Group ◽  
In Vitro Digestibility ◽  
Relative Crystallinity ◽  
Heat Moisture Treatment ◽  
Three Samples ◽  
Significant Difference ◽  
Moisture Treatment

Potato starch was modified via heat-moisture treatment (HMT) under various reaction conditions. The effect of HMT on structural, physicochemical, and in vitro digestibility were investigated. HMT led to the rupture, adhesion and partial gelatinization, and agglomeration of the granules which surface became rougher, thereby increasing the particle size and resulting in the hollow structure located at the hilum of potato starch granules. XRD results showed an increased relative crystallinity and transformed crystalline structure from B-type to C-type with the extension of heat moisture treatment. FTIR spectroscopy results indicated that HMT might cause additional interactions between amylose-amylose, and/or amylose-amylopectin and/or amylopectin-amylopectin chains, which eventually leads to the increase of the mass of the carbonyl group and a hydroxyl group. HMT significantly decreased the peak viscosity, hold viscosity, and breakdown viscosity of starch, while the gelatinization temperature increased. The tHMT1, THMT100, and CHMT15 had the lowest content of RDS and there was no significant difference between the three samples, that is these three samples had the highest total content of SDS and RS.

scholarly journals In Vitro Starch Digestibility, Rheological, and Physicochemical Properties of Water Caltrop Starch Modified with Cycled Heat-Moisture Treatment

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1687
Author(s):  
Po-Ching Tsai ◽  
Lih-Shiuh Lai
Keyword(s):  
Physicochemical Properties ◽  
Amylose Content ◽  
Starch Content ◽  
Average Molecular Weight ◽  
In Vitro Digestibility ◽  
Weight Average Molecular Weight ◽  
Heat Moisture Treatment ◽  
Moisture Treatment ◽  
Starch Paste

This study focused on the effect of cycled heat-moisture treatment (cHMT) on the in vitro digestibility, rheological, and physicochemical properties of water caltrop starch. The amylose content increased significantly by cHMT, whereas damaged starch content decreased only in the groups with more than two cycles applications. cHMT generally increased the weight-average molecular weight, except for single cycle treatment which showed the reverse result. In thermal properties, the onset temperature (T0), peak temperature (Tp), and conclusion temperature (Tc) increased, while the enthalpy needed to complete the gelatinization was lowered by cHMT. Water caltrop starch paste showed less shear-thinning behavior with cHMT. Meanwhile, the viscosity and tendency to form strong gel were enfeebled with modification. cHMT significantly changed predicted glycemic index (pGI) value, especially in samples that underwent the most cycles of treatment, which showed the lowest pGI compared to native and other treatment. These results suggested that cHMT water caltrop starch was effectively modified and showed diversified properties.

High-Pressure Homogenization Alters Physicochemical Properties and In Vitro Digestibility of Chinese Yam (Dioscorea Opposita Thunb.) Starch

2018 ◽  
Vol 18 (1) ◽  
pp. 10-15
Author(s):  
Wang Yi-Wei ◽  
He Yong-Zhao ◽  
An Feng-Ping ◽  
Huang Qun ◽  
Zeng Feng ◽  
...  
Keyword(s):  
High Pressure ◽  
Physicochemical Properties ◽  
Starch Content ◽  
In Vitro Digestibility ◽  
High Pressure Homogenization ◽  
Starch Granules ◽  
Cross Polarization ◽  
Chinese Yam ◽  
Crystal Type

In this study, Chinese yam starch-water suspension (8%) were subjected to high-pressure homogenization (HPH) at 100 MPa for increasing cycle numbers, and its effect of on the physicochemical properties of the starch was investigated. Results of the polarizing microscope observations showed that the starch granules were disrupted (i.e. greater breakdown value) after HPH treatment, followed by a decrease in cross polarization. After three HPH cycles, the crystallinity of starch decreased, while the crystal type remained unaltered. Meanwhile, the contents of rapidly digestible starch and slowly digestible starch were increased. On the contrary, resistant starch content was decreased. Our results indicate that HPH treatment resulted in reduction of starch crystallinity and increase of starch digestibility.

scholarly journals Optimization of Microwave Pre-Cooked Conditions for Gelatinization of Adzuki Bean

Foods ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 171
Author(s):  
Jianyou Zhang ◽  
Xuehua Xie ◽  
Lyu Zhang ◽  
Yiling Hong ◽  
Gaopeng Zhang ◽  
...  
Keyword(s):  
Starch Content ◽  
Polarized Light ◽  
Microwave Treatment ◽  
Adzuki Bean ◽  
X Ray Diffraction ◽  
Relative Crystallinity ◽  
Soaking Time ◽  
X Ray ◽  
Ft Ir ◽  
Microwave Time

Pre-cooked adzuki beans (Vigna angularis), which looks like dried adzuki bean, is easily cooked and preserved. This study aimed to optimize the microwave pre-cooked conditions on adzuki beans by applying the response surface methodology. The results showed that soaking time has a significant effect on the gelatinization degree of adzuki beans according to microwave time. The most suitable gelatinization and the sensory scores were obtained with a soaking time of 7.8 h, a microwave power of 830 W, and microwave time of 92 s. The pre-cooked treatment had no significant effect (p > 0.05) on the protein, free amino acid, fat and starch content of adzuki bean products. The results of SEM and polarized light microscopy showed that the surface and center of starch were damaged after microwave treatment. XRD showed that microwave pre-cooking did not change the crystal structure of starch and maintained the original order of type A structure while reducing the relative starch crystallinity. FT-IR showed that the pre-cooked treatment did not produce new structure in adzuki bean starch, but the ratio of 1047/1022 cm−1 was slightly decreased, indicating that the starch crystallization area decreased relative to the amorphous area and the relative crystallinity decreased. The results of FTIR were consistent with X-ray diffraction results. Therefore, microwaves improved the gelatinization of adzuki beans and made the pre-cooked adzuki beans more suitable.

scholarly journals EFFECT OF CROSS-LINKING ON PHYSICOCHEMICAL AND IN VITRO DIGESTIBILITY PROPERTIES OF POTATO STARCH

2017 ◽  
pp. 463 ◽  
Author(s):  
Hyemi Heo ◽  
Yun-Kyung Lee ◽  
Yoon Hyuk Chang
Keyword(s):  
Sodium Tripolyphosphate ◽  
Potato Starch ◽  
Light Transmittance ◽  
Cross Linking ◽  
In Vitro Digestibility ◽  
Crystalline Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Swelling Factor

The present study aimed to investigate the physicochemical and in vitro digestibility properties of potato starch cross-linked using sodium trimetaphosphate (STMP)/ sodium tripolyphosphate (STPP). These properties were investigated by X-ray diffraction, analysis of the swelling factor and light transmittance, and in vitro digestibility tests for rapid digestible starch (RDS) and resistant starch (RS) contents. X-ray diffraction patterns showed that cross-linking with STMP/STPP occurred primarily in the amorphous regions and did not change the crystalline region of the potato starch granules. The swelling factor and light transmittance of the cross-linked potato starch (CLPS) was significantly lower than that of the native potato starch (NPS). The in vitro digestibility results showed that cross-linking with STMP/STPP decreased the RDS contents significantly and increased the RS contents significantly compared with those of NPS. The RS contents of potato starch increased significantly with the increasing degree of crosslinking. Potato starch cross-linked using STMP/STPP can be used a source of dietary fiber in the food industry.

Sign in / Sign up

Export Citation Format

Share Document