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| 1 | Phytosterols in edible oil:Distribution,analysis and variation during processing显示文摘Phytosterols,which are naturally occurring in plants,have excellent nutritional and health values on lowering both the blood cholesterol level and the risk of cardiovascular diseases.Edible oils are the main source of daily intake of phytosterols,whereas the properties of phytosterols may vary a lot depending on their sources.During the processing of edible oil including refining and frying,phytosterol's content fluctuates,which influences the properties of the final product.Phytosterols and their derivatives undergo physical migration between different phases and chemical conversion during the processing,which reduces the quality and the commercial value of edible oils.Therein,the loss of phytosterols is the major concern in the process of neutralization and deodorization.In addition,oxidation and thermal degradation of phytosterols occur simultaneously during frying,which also reduces the content of phytosterols.Nevertheless,the oil matrix has a promoting or an inhibitory effect on the thermal oxidation of phytosterols.Therefore,various efforts have been devoted to analyzing and improving the remaining contents of phytosterols in edible oil.Regardless of the processing method,temperature plays an important role in the loss of phytosterols.At present,themain analysismethods of phytosterols include gas chromatography and liquid chromatography,inwhich the pretreatment of different types of phytosterols is also a crucial step.This review focused on the following topics comprehensively:(i)the distribution of phytosterols in the oil-containing plants and edible oils during the refining processing;(ii)the pretreatment and analysis methods of various phytosterols(free phytosterols,phytosteryl fatty acid esters,phytosteryl glycosides and acylated phytosteryl glycosides);(iii)the variation of phytosterols in process of esterification and oxidation,storage and so on.The study also proposed that the investigation in the loss and safety of phytosterols during processing of the vegetable oils should be proceeded further in combination with efficient and accurate chromatography methods. | Ge Bai Chuanguo Ma Xiaowei Chen | 2021 | Grain & Oil Science and Technology2021，4，1： | 5 |
| 2 | Phase structure and mechanical properties of ternary polypropylene/elastomer/nano-CaCO3 composites 显示文摘 | MA Chuanguo MAI Yuliang RONG Minzhi | 2007 | Compos Sci Technol2007，67，： | 1 |
| 3 | Adsorption behavior of activated carbon for the elimination of zearalenone during bleaching process of corn oil显示文摘Zearalenone is a mycotoxin produced by Fusarium species.It frequently contaminates cereals used for foods or animal feeds,especially deposited in crude corn oil.Certain amounts of zearalenone can be removed during refining processes.In this study,we studied the influence of activated carbon and six industial absorbents(zeolite,diatomite,attapulgite,perlite,montmorillonite and activated clay)on the elimination of zearalenone during bleaching process of corn oil and explored the absorption mechanism of activated carbon.Results showed that activated carbon had an excellent adsorption capacity of zearalenone compared with the other six industrial adsorbents.For activated carbon,a high removal rate of zearalenone(exceeding 83%)from heavily zearalenone-polluted corn oil was achieved and the removal rate of zearalenone was kept above 60%after five regeneration cycles.The research on the adsorption mechanism of activated carbon showed that Freundlich adsorption isotherm model and pseudo-second-order kinetic model could well described the adsorption process.The thermodynamic study demonstrated that adsorption process was spontaneous and exothermic.Fourier transform infrared spectroscopy and Raman spectroscopy further revealed that activated carbon was effectively combined with zearalenone viaπ-πinteraction.Thus,activated carbon is an efficient and suitable adsorbent to control the levels of zearalenone during bleaching process of corn oil.This study not only proposed a systematic research scheme for the mechanism study of activated carbon for the elimination of zearalenone in corn oil,but also provided the scientific basis for developing effective methods to eliminate zearalenone in refined vegetable oils. | Yuyuan Hu Chuanguo Ma Weifeng Huang Shujing Guo Tong Wang Jun Liu | 2023 | Grain & Oil Science and Technology2023，6，1： | 1 |
| 4 | Phase structure and mechanical properties of ternary polypropylene/elastomer/nano-CaCO3composites显示文摘 | MA Chuanguo MAI Yuliang RONG Minzhi | | 0，，14： | 1 |
| 5 | Phase structure and mechanical properties of ternary polypropylene/elastomer/nano-CaCO3 composites显示文摘 | Ma Chuanguo Mai Yuliang Rong Minzhi | 2007 | Compos Sci Techn2007，67，14： | 1 |
| 6 | Irradiation- induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypro pylene composites 显示文摘 | Ma Chuanguo Rong Minzhi Zhang Mingqiu Friedrich K | 2005 | Polymer Engineering and Science2005，45，4： | 1 |
| 7 | Irradiation - induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypropylene composites 显示文摘 | MA Chuanguo RONG Minzhi ZHANG Mingqiu FRIEDRICH K | 2005 | POLYMER ENGINEERING AND SCIENCE2005，45，4： | 1 |
| 8 | Irradiation-induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypropylene composites显示文摘 | Ma Chuanguo Rong Minzhi Zhang Mingqiu Friedrich K | 2005 | Polymer Engineering and Science2005，45，4： | 1 |
| 9 | Irradiation-induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypropylene composites显示文摘 | Ma Chuanguo | 2005 | Polym Engng Sci2005，45，4： | 1 |
| 10 | Influence of oscillatory shear on crystallization of isotactic polypropylene studied by dynamic mechanical analysis 显示文摘 | Ma Chuanguo Chen Lan Xiong Xiaomin | 2004 | Macromolecules2004，37，24： | 1 |
| 11 | Significantly enhancing fracture toughness of epoxy composite with promisingγ-FeOOH@Fe_(2)O_(3)hybrid nanoparticles by magnetic field assistance显示文摘The toughening of epoxy resin(EP)and the interlaminar toughening of carbon fiber reinforced composite(CF/EP)laminates have been widely concerned.In this work,the needle-likeγ-FeOOH nanoparticles were prepared by liquid phase deposition-air oxidation method,and then were calcined under different conditions to obtainγ-FeOOH andγ-Fe_(2)O_(3) hybrid nanoparticles(γ-FeOOH@Fe_(2)O_(3)).Effect of calcination condition ofγ-FeOOH@-Fe_(2)O_(3) and magnetic field assistance on fracture toughness(KIC)of EP was systematically investigated.Then the selectedγ-FeOOH@Fe_(2)O_(3) with the best toughening effect were used to improve the mode I interlaminar fracture toughness(GIC)of CF/EP laminate.The resultingγ-FeOOH@Fe_(2)O_(3) have a length of around 1μm,a diameter of around 100 nm and the Ms of 8.99–45.96 emu/g.After calcinated at 250℃ for 1 h,theγ-FeOOH@Fe_(2)O_(3) containing 24 wt%FeOOH and 76 wt%Fe_(2)O_(3) achieved the best toughening effect.Under a magnetic field of 0.09 T,the KIC of theγ-FeOOH@Fe_(2)O_(3)/EP composite(2.45 MPa m^(1/2)) is 81.7%and 66.7%higher than that of neat epoxy and the composite without magnetic field induction,respectively.Furthermore,the GIC of theγ-FeOOH@Fe_(2)O_(3)/CF/EP composite(0.914 kJ/m^(2)) is also significantly increased by 88.8%and 51.8%compared to that of CF/EP and the corresponding composite without magnetic field induction,respectively. | Guan Chen Chuanguo Ma Zehao Fu Jing Wang Peibang Dai | 2022 | Nano Materials Science2022，4，2： | 1 |
| 12 | Phase structure and mechanical properties of ternary polypropylene/ elastomer/nano-CaCO 3 composites 显示文摘 | MA Chuanguo MAI Yuliang RONG Minzhi | 2007 | Compos Sci Techn- ol2007，67，14： | 1 |
| 13 | Hydrophilic phytosterol derivatives: A short review on structural modifications, cholesterol-lowering activity and safety显示文摘Phytosterols have received extensive attention owing to their excellent cholesterol-lowering activity and the role in cardiovascular diseases prevention. However, poor solubility in both oil and water limited the application of free phytosterols in the food industry. Chemical or enzymatic modifications were effective to improve the physicochemical properties as well as the bioavailability and cholesterollowering activity of phytosterols. Higher oil solubility and lower melting point of phytosterols have been achieved by esterification and transesterification with fatty acids and triacylglycerols so as to enhance the bioavailability, reduce formation of precipitates, and improve the sensory quality of products.While the researches on the improvement on its water solubility is a hot topic. Hydrophilic phytosterol derivatives have promising applications in the food industry because most of foods belong to aqueous matrix. Hydrophilic modification is useful and meaningful for phytosterols in both industrial and commercial applications. This review mainly highlights the hydrophilic phytosterol derivatives in the following aspects:(i) hydrophilic modifications of phytosterols by coupling with various polar components;(ii) cholesterol-lowering activity and possible molecular mechanisms of hydrophilic phytosterol derivatives on reducing serum cholesterol level;and(iii) safety evaluation of hydrophilic phytosterol derivatives in cell-culture studies, animal models and clinical trials. | Yuyuan Hu Chuanguo Ma Xiaowei Chen Ge Bai Shujing Guo | 2022 | Grain & Oil Science and Technology2022，5，3： | 1 |
| 14 | Phase tructure and mechanical properties of ternary polypropylene/ lastomer/nano-CaC03 composites显示文摘 | Chuanguo Ma Yuliang Mai Minzhi Rong | 2007 | Composites Science nd Technology2007，67，14： | 1 |
| 15 | Study on crystallization behavior of Tibet butter显示文摘Tibetan butter(TB),generally called butter,is a solid oil product extracted from yak milk in the QinghaiTibet plateau area.However,due to the limitations of raw material sources and production technology,there is a shortage of TB,so it is important to find substitutes of TB.This paper studied the crystallization behavior of six kinds of commercial TB products in Tibet to provide the theoretical basis for the development of TB substitutes for the production of TB lamps and flowers.This study assessed the crystallization behaviors of the TB samples,including isothermal crystallization process and non-isothermal crystallization process.The microstructure,isothermal crystallization of TB were evaluated by polarized light microscopy and low-pulse NMR spectrometry,respectively.The non-isothermal crystallization process of TB under temperature scanning were investigated using Rheometer,and the crystallization behavior under different cooling rates were determined by diferential scanning calorimetry(DSC)procedures.The results showed that the TB was crystallized at a higher supercooling(-10,0 and 10℃).Dimensional growth is dominant;at 20℃,spiral growth dominates.The TB has complex crystallization nucleation behavior.The crystal types of TB are mainlyβ’-crystal form andβ’-like crystal form.The lower the cooling rate,the shorter the crystallization induction time,and the more the number of crystal nuclei.Therefore,during producing TB substitutes in the factory,the cooling rate can be controlled at10℃/min to reduce energy consumption and production costs. | Chuanguo Ma Songbo Wang Tianlei Si Jieyu Li Xiaowei Chen | 2021 | Grain & Oil Science and Technology2021，4，2： | 1 |
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