INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2022
·Vol. 57
·期 7
·4065-4075
·
IF 3.612
Jianling Wei,Zhengyang Wu,Tingting Chai,Fanyu He,Yuewen Chen,Xiuping Dong,Yugang Shi
Summary This study aimed to elucidate the information mechanism of advanced glycation end products (AGEs) in sturgeon fillets, and its inhibition by polyphenol. The results revealed that LTVH fillets (processed using low temperature vacuum heating method, LTVH) did not have lower values of AGEs than those treated using TC method (a typical thermal procedure using boiling water at 100 °C). The addition of tea polyphenol, on the other hand, drastically reduced the AGEs levels in LTVH fillets. An in vitro model including sturgeon myofibrillar protein and glucose was employed in this work to evaluate the inhibition of AGEs by tea polyphenol. The results showed that free Arginine was susceptible to interaction with glucose, which caused the development of AGEs. However, the addition of tea polyphenol competed with glucose for binding to free Arginine, leading to a substantial decrease in free Arginine concentration and an increase of free amino loss rate, resulting in the inhibition of AGEs generation. The LTVH technique, in combination with tea polyphenol, can be used to prevent the production of AGEs on fillets during the thermal treatment.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Horizons
·
2018
·Vol. 4
·期 2
·388-395
·
IF 9.391
Ding Zhou,Pengtao Jing,Yi Wang,Yuechen Zhai,Di Li,Yuan Xiong,Alexander V. Baranov,Songnan Qu,Andrey L. Rogach
Aggregation-induced quenching (AIQ) of emission is an obstacle for the development of carbon dots (CDots) for solid-state luminescent devices. In this work, we introduce a method to avoid AIQ and to produce highly luminescent CDots through a space-confined vacuum heating synthesis. In the presence of CaCl2, a mixture of citric acid and urea forms an inflated foam under vacuum heating at 120 °C. Upon gradually increasing the heating temperature to 250 °C, blue emissive molecular species are first formed, and are then transformed into uniform-sized green emissive CDots through dehydration and carbonization processes taking place in the confined ultrathin spaces of the foam walls. The green luminescence of these CDots originates from conjugated sp2 domains, and these CDots exhibit a high photoluminescence quantum yield (PLQY) of 72% in ethanol solution. Remarkably, due to the existence of only one type of recombination center in these nanoparticles, AIQ does not take place in CDot-based close-packed films, which show strong emission with a PLQY of 65%. Utilizing the differences in the emission properties of vacuum heating produced CDots, CDots synthesized through microwave-assisted heating, and commercial green fluorescent organic ink (namely, excitation-dependent vs. excitation-independent emission, and different stability against photobleaching), multilevel data encryption has been demonstrated.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Functional Materials Letters
·
2024
·
IF 1.2
Jianhang Hai,Shuli Wei,Jie Zou,Lele Wang,Yunqing Lu,Jin Wang
In this work, we activate metal-organic frameworks (MOFs) by applying the general vacuum heating (VH) method or the solvent exchange (SE) method, and encapsulate PSt into the MOF channels by the in-situ polymerization. For the SE method, methanol is optimal to exchange the DMF molecules inside MOF. The effectiveness of these two activation methods is compared. The results show that the MOF activated via the SE method has a higher specific surface area and a larger pore volume than the MOF activated via the general VH method. Also, the SE method is more efficient for the removal of DMF from the MOF channels, and leaves more open metal sites. Specifically, the amounts of loaded monomers inside the MOF activated via the SE method and the general VH method are 4.58 and 2.67 mmol/cm 3 . Furthermore, the MOF activated via the SE method has better retention of the channel structure and more free volume in the channels. This can increase the mobility of the monomers. As a consequence, the conversion rate of 47.57% from St to PSt is achieved in the MOF activated via the SE method, which is 50.21% higher than that obtained via the general VH method.
研究领域:
材料化学
·
纳米多孔材料
·
高分子科学
·
配位化学
·
功能材料
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Dan-li Jin,Jian-ling Wei,Fan-yu He,Ting-ting Chai,Shao-tian Ren,Jing-jing Fu,Yue-wen Chen
The binding mechanism between tea polyphenols and sturgeon myofibrillar protein (SMP) in the early stage (0, 2, 4 min), middle stage (6, 10 min) and late stage (15 min) of low temperature vacuum heating (LTVH) in an in vitro anti-glycation model was investigated. The result indicated that the protein cross-linking during LTVH treatment were mainly induced by tea polyphenols. The loss rate of free arginine (Arg) and free lysine (Lys) of SMP at the late stage of LTVH treatment (15 min) was 73.95 % and 83.16 %, respectively. The hydrophobic force and disulfide bond were the main force between tea polyphenols and SMP in the middle and late stage of LTVH treatment. The benzene ring and phenolic hydroxyl group of tea polyphenols can interact with the amino acid residues of SMP, which was exothermic and entropy-increasing. This study provides new insights in the interaction mechanisms between tea polyphenols-protein during heat treatment process.
研究领域:
食品科学
·
生物化学
·
蛋白质化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 27
·2300364
·
IF 13.3
Qiuchun Lu,Yufei Zhang,Guanlin Yang,Meiling Xiong,Wenqiang Wu,Zhangsheng Xu,Hui Lu,Yegang Liang,Zeping He,Yang Yu,Xiaoming Mo,Xun Han,Caofeng Pan
Cesium copper halide perovskite is one of the promising materials for solar-blind light detection. However, most of the cesium copper halide perovskite-based photodetectors (PDs) are focused on ultraviolet A detection and realized on the rigid substrate in the single device configuration. Here, a flexible solar-blind PDs array (10 × 10 pixels) based on the CsCu 2 I 3 film patterns for ultraweak light sensing and light distribution imaging is reported. Large-scale CsCu 2 I 3 film arrays are synthesized with various shapes and uniform dimensions through a simple vacuum-heating-assisted solution method. Benefiting from excellent air stability and superior resistance to the photodegrading of the CsCu 2 I 3 film, the array device exhibits long-term stable photoswitching behavior for 8 h and ultralow light detection capability to resolve the light intensity of 6.1 nW cm −2 with a high responsivity of 62 A W −1 , and the array device can acquire clear images of “G”, “X”, and “U” showing the input light distribution. Moreover, the flame detection and warning system based on a curved solar-blind PDs array is demonstrated, which can be used for multi-flame monitoring and locating. These results can encourage potential applications of the CsCu 2 I 3 film-based PDs array in the field of optical communication and environment monitoring.
研究领域:
材料科学
·
光电技术
·
光子学
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）