Using 13 kinds of rice samples as materials, a texture analyzer was used to measure 9 texture indicators of rice: hardness, viscosity, adhesion, elasticity, recovery energy, recovery deformation, final load, hardness energy, and stiffness; rice water absorption was measured using a cooking method. The relationship between rice texture quality index and cooking quality index was […]
Abstract: The purpose is to reduce the detection cost by optimizing the detection process and machine conditions in GB5009.15 when detecting cadmium residues in rice. Methods Wet digestion was used to pretreat rice samples, the temperature rising program was optimized, and the repeatability, recovery rate, and precision were verified. The results reduce the impact of […]
Objective To optimize the gas chromatography-tandem mass spectrometry-internal standard method for the determination of insecticidal ring residues in rice. Method: Under the acidic condition of formic acid, the insecticidal ring in rice was extracted and concentrated with methanol, and then purified through N-propyl secondary amine (PSA) solid phase extraction cartridge, and then purified with methanol-dichloromethane […]
The attenuated total reflection Fourier transform infrared spectrometer was used to track and measure the gelatinization process of different varieties of rice starch. At the same time, compared with the starch crystallinity measured by the X-ray diffractometer, the details of the changes in the crystal structure of the starch granules during the gelatinization process were […]
In order to reveal whether the difference in the blood pressure regulation function of animal and plant-derived proteins is caused by the angiotensin conversion enzyme (ACE) inhibitory activity of protein peptides, animal and plant proteins inhibited the ACE activity of protein peptides after digestion in vitro. research. The pepsin-trypsin two-step digestion method is used to […]
The process conditions for preparing fat simulants using rice starch as raw material were studied. The effects of enzyme addition, reaction time, reaction temperature and substrate concentration on the de value of the product were studied through single factor experiments. On this basis, orthogonal experiments were carried out. The optimal conditions for the preparation process […]
The rice, vegetables, pork and drinking water consumed by residents in the mercury mining areas of Guizhou all showed high levels of total mercury, but only rice was enriched in methylmercury. The average proportions of methylmercury intake from rice consumed by residents in the three villages in the Wanshan mercury mining area accounted for 97.5%, […]
To the exotic plant Spartina? (spartina?anglica)? The declining population was subjected to root irrigation treatment with carbendazim at three concentrations of high, medium and low (i.e. 300 times, 600 times and 1200 times dilution of 50% carbendazim wettable powder), and the growth rate of Spartina under fungicide treatment conditions was determined. Morphological plasticity, clonal growth […]
Acetate with a high degree of substitution (DS>2) is widely used in the field of polymers due to its thermoplasticity and hydrophobicity. Using rice starch as raw material and p-toluenesulfonic acid as catalyst, in a glacial acetic acid/acetic anhydride system, an ultrasonic strengthening method was used to prepare highly substituted acetate starch, and the product […]
Objective To establish a QuEChERS pre-treatment technology combined with gas chromatography for the simultaneous determination of 10 organophosphorus pesticides (phorate, methotrexate, difenthionate, paraoxon, pyrimidinate-methyl, methotrexate, isofenphos) in rice. Phosphorus, methophos, sterilized phosphorus, ethion) residue method. Methods The sample was purified by QuEChERS method and concentrated, separated by Agilent HP-5 chromatographic column, detected by flame photometric […]