ENERGY & FUELS
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2026
·Vol. 40
·期 31
·16999-17010
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IF 6
Qi Youwei,Li Xuanyi,Zhao Mingxing,Mao Yuxiang,Cheng Jun
To address the challenges of low utilization of active
sites and
poor thermal stability of catalysts in the conversion of microalgal
biodiesel into biojet fuel under CO 2 atmosphere, a nickel-rich
carbon sheet catalyst was synthesized through partial pyrolysis of
a nickel-based aminoterephthalic acid framework (Ni-NH 2 –BDC) to enhance conversion rate and product selectivity.
Because the specific surface area of Ni-NC-500 derived from pyrolyzed
Ni-NH 2 –BDC at 500 ° C increased from 20.866
to 304.337 m 2 /g, more generated Ni 0 active sites
(33.69%) strengthened the deoxidation of methyl palmitate (a typical
composition of microalgal biodiesel). Compared with Ni-NH 2 –BDC, the total acid of Ni-NC-500 has significantly increased,
reaching 58.485 mmol/g, which will promote C–C bond breaking.
The large amounts of pyridine nitrogen (N-6, 39.98%) and pyrrole nitrogen
(N-5, 60.13%) present in Ni-NC-500 can significantly enhance the catalytic
performance. Therefore, the conversion rate of methyl palmitate and
the selectivity for jet-fuel range (C8–C16) products increased
to 96.28 and 84.69%, respectively.
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Sustainable Energy Technologies and Assessments
·
2026
·
IF 7.4
Hui Li,Yixuan Zhang,Phumlani Fortune Msomi,Yunpu Wang,Xiaoling Ma
CaO-CNT absorbs 92% broad-spectrum light and rapidly produces localized heat. • Photothermal transesterification delivers efficient energy supply to active sites. • Under optimal conditions, 99.22% biodiesel conversion is achieved at 50 °C. • LCA demonstrates low carbon profile with GWP 2.07 kg CO 2 eq·kg −1 and DFF 28.24 MJ·kg −1 . Transesterification for biodiesel production demands external heat supplied through temperature gradient-driven heating, which limits energy efficiency. Photothermal catalysis offers an alternative route, but reported photothermal catalysts for biodiesel transesterification often suffer from narrow-spectrum light harvesting, strict requirements for monochromatic high-power light sources, and inefficient heat delivery to active sites, which severely restrict their practical application. In this study, a CaO-CNT photothermal catalyst was fabricated via wet impregnation coupled with high-temperature calcination to enable in-situ solar-to-heat conversion and boost catalytic activity. Multiple characterization techniques, including TG/DTG, XRD, XPS, SEM, Raman spectroscopy, N 2 adsorption and desorption, UV-Vis-NIR spectroscopy and infrared thermal imager were carried out, and simulated sunlight from a xenon lamp was used for palm oil photothermal transesterification. The CaO-CNT catalyst exhibited 92% light absorption over 300-2500 nm and rapidly increased its surface temperature from ambient temperature to 70.7 °C within 300 s under an irradiation power density of 14.5 W/g. Compared with conventional water-bath heating, photothermal heating catalyzed by CaO-CNT resulted in higher biodiesel conversions, with improvements of 7.71%, 12.48%, and 9.71% at 46 °C, 50 °C, and 54 °C, respectively. The maximum biodiesel conversion of 99.22% was achieved by photothermal-driven heating with a catalyst loading of 6 wt%, a methanol/oil molar ratio of 10, and an irradiation power density of 15.2 W/g for 2.5 h. Findings from life cycle assessment (LCA) established that the global warming potential (GWP) of this process reached 2.07 kg CO 2 eq·kg −1 , with the depletion of fossil fuel (DFF) amounting to 28.24 MJ·kg −1 . Download: Download high-res image (194KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF FOOD PROPERTIES
·
2026
·
IF 3.9
Nian Cao,Yubo Yang,Xiaoling Xiong,Bohan Zhang,Ping Xiang,Fan Yang
This pioneering study investigated the effects of sip volume on sensory perception and drinking comfort during the consumption of Jiangxiangxing Baijiu (JB). Six sip volumes (6, 9, 12, 15, 18, and 20 mL) were tested with 30 participants (15 males and 15 females). Results revealed gender-specific preferences: females tended to prefer sip volumes of 9–12 mL, while males were more likely to favor 18 mL. Using Temporal Dominance of Sensation (TDS) and Check-All-That-Apply (CATA) methods, it was found that oral sensations of sweetness and sauce flavor, as well as post-pharyngeal sensations of “smoothness,” “mellowness,” and “lingering aftertaste,” enhanced drinking comfort. In contrast, oral sensations of spiciness and bitterness, along with post-pharyngeal sensations of “pungency,” “thinness,” “blandness,” and “momentary aftertaste,” impaired comfort. Notably, females may place greater emphasis on oral perception, whereas males could focus more on post-pharyngeal sensations. A novel flavor analysis identified 20 key compounds that influence JB perception. The insights from this research provide valuable contributions to improving the drinking experience of JB.
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INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Siwei Liu,Mengting Wang,Shuyang Jiang,Taohong Li,Hongrui Zeng,Weishuai Dai,Shouqing Liu,Xuemei Li
The heterogeneous solid base catalyst integrates catalytic activity with emulsifying capacity. • 94.51% conversion was achieved for WFO to biodiesel in 36 min at 20℃. • The catalyst exhibits excellent water and free fatty acid tolerance. • The catalyst has excellent reusability and regenerability. Due to heterogeneous nature, the biodiesel synthesis via transesterification typically requires high temperatures or long reaction times even under catalytic conditions. To address this challenge, we designed a bifunctional composite solid base catalyst by loading K₂CO₃ onto activated carbon (K 2 CO₃/AC), which synergistically integrates catalytic activity and emulsifying capacity. With the formation of Pickering emulsions in the alcohol-oil system, transesterification reaction is remarkably accelerated via enhanced interfacial contact. Specifically, for waste frying oil methanolysis, a conversion of 94.51% was achieved within 36 min at 20℃. Mechanism investigations indicate that a high K 2 CO 3 loading combined with an appropriate particle size of the catalyst is crucial for achieving efficient emulsification and catalysis. The catalyst demonstrated exceptional impurity tolerance, maintaining > 90% biodiesel conversion even with 1.5 wt% free fatty acids (FFAs) and 2.4 wt% water, which demonstrates significant improvements in FFA and water tolerance over homogeneous base catalysts. Moreover, the as-synthesized biodiesel satisfied the specifications of the international standards ASTMD 6751 and EN −14214 in terms of key physicochemical properties. In addition, it exhibited superior reusability (>90% conversion after three cycles) and easy regenerability via simple K 2 CO 3 re-impregnation. Featuring facile preparation, excellent catalytic performance at room temperature, and high stability, this amphiphilic catalyst presents an industrially feasible and impurity-tolerant solution for biodiesel synthesis.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Liuyang Wang,Pei Guo,Xiaofang Zhang,Jianqing Guo,Runjie Meng,Jun Ning,Tao Zhang
Sex pheromones, which play a critical role in mediating sexual communication of Lepidoptera, are biosynthesized by a variety of particular enzymes in specialized pheromone glands (PGs). Among these enzymes, fatty acyl-CoA reductases (FARs) catalyze the reduction of fatty acyl precursors to their corresponding alcohols. In this study, we identified 32 FARs from the genome of Mythimna loreyi, an important agricultural pest. Among all MlorFARs identified, only MlorFAR1 showed a PG expression pattern and exhibited a positive response to pheromone biosynthesis activating neuropeptide (PBAN) injection. Silencing MlorFAR1 reduced pheromone titers by 70.4–88.9% and significantly reduced mating rates at the 48–72 h postinjection time point. Heterologous expression in yeast confirmed that MlorFAR1 preferentially converted medium-chain fatty acid methyl esters to alcohols. These findings establish MlorFAR1 as a pivotal enzyme in the biosynthesis of sex pheromones in M. loreyi, providing a framework for the development of innovative pest management strategies.
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DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Yuan Xue,JinXia Wang,Hong Yuan,Hui Li
With the aim of preparing a sulfonic acid-type solid acid catalyst having a high density of acid sites and excellent stability, this work synthesized sulfonic acid bowl-shaped hydrothermal carbon microspheres (SA-OBHCs), using amine groups as the primary sulfonic acid bonding sites. This material was synthesized via a three-step functionalization process comprising the oxidation , amidation and sulfonation of BHCs. The extent to which chlorosulfonic acid reacted with amine groups in diethylenetriamine molecules on microsphere surfaces was also investigated using density functional theory calculations. These calculations showed that the substitution reaction of primary amines proceeded less readily than that of secondary amines but provided a more stable product. The surface acid d ensity of the SA-OBHCs was as high as 11.2 mmol·g −1 and the –SO 3 H groups on the SA-OBHCs were found to be thermally stable up to 200 °C. These SA-OBHCs were subsequently used to catalyze the synthesis of fatty acid methyl esters (FAMEs) from a waste frying oil model compound and methanol. Reactions performed using a methanol/oil molar ratio of 20:1 at 140 °C for 3 h gave a FAMEs yield of 93.4 %. After four reuses, an SA-OBHCs specimen provided a FAMEs yield of 77.5 %, demonstrating the significant stability of this material.
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WASTE MANAGEMENT
·
2023
·
IF 8.1
Hongxu Lu,Yanxia Liu,Wenyue Shen,Yang Zhou,Xiangwei Ma,Shibo Sun,Xiaoying Dong,Fengyun Ji,Huiyan Tong,Jianqiang Xu,Gaohong He,Weiping Xu
Food waste can be converted into insectile fatty acids (FAs) by the larvae of black soldier fly (BSFL), Hermetia illucens , for use in the feed sector or as a source of biodiesel. However, waste oil was less decomposed than carbohydrate or protein in frass due to the limitation of larval lipid metabolism. In this study, 10 yeast strains were screened, corresponding to six species, to examine their capacity of improving lipid transformation performance by BSFL. The species of Candida lipolytica was superior to the other five species, which exhibited significantly higher lipid reduction rate (95.0–97.1 %) than the control (88.7 %), and the larval FA yields achieved 82.3–115.5 % of the food waste FA matters, suggesting that BSFL not only transformed waste oil but also biosynthesized FAs from waste carbohydrate and other substances. Further, the CL2 strain of Candida lipolytica was examined for treating food waste containing high lipid content (16–32 %). The lipid removal rate was found improved from 21.4 to 42.3 % (control) to 80.5–93.3% in the waste containing 20–32 % lipid. The upper limit of lipid content that could be endured by BSFL was ≈16 %, and the CL2-enrichment elevated the upper limit to ≈24 %. Fungal community analysis indicated that Candida spp. accounted for the lipid removal improvement. The Candida spp. CL2 strain may facilitate the lipid reduction and transformation by BSFL through microbial catabolizing and assimilation of waste FAs. Altogether, this study suggests that yeast enrichment is feasible in improving lipid transformation by BSFL especially for food waste exhibiting high lipid content.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2023
·
IF 4.3
Ruifang Wang,Qingzhen Zhu,Lina Qiao,Jing Wang,Shengbao Feng,Hailang Sun,Ning Zhang,Baoguo Sun,Jinyuan Sun,Hehe Li,Haitao Chen
Qingke baijiu is a typical light-flavor baijiu and considered as one of the geographical indication products in China. The aroma of newly fermented original Qingke baijiu is unique and popular with consumers. In this work, the key aroma-active compounds of original Qingke baijiu (QKJ) were characterized by combined instrument analysis with sensory analysis. A total of 54 aroma compounds with high flavor dilution factors (FD values≥ 9) were screened out by gas chromatography–olfactometry (GC–O) combined with aroma extract dilution analysis (AEDA). After quantitation, 28 aroma-active compounds had odorant activity values (OAVs) > 1 in QKJ. Recombinant and omission experiments further proved that the esters and alcohols, especially ethyl lactate, phenylethyl acetate, ethyl hexanoate , 2-methyl-1-butanol, ethyl acetate , γ -nonalactone and 2,3-dimethyl-5-ethyl pyrazine were critical to the flavor of QKJ. Consequently, this research reveals the characteristics of QKJ and provides theoretical support for production and quality control assurance.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Shudong Wang,Yuhan Cui,Chenxi Zhao,Changhai Liang,Chuang Li
The hydrothermal stability of supported metal catalysts is one of the greatest challenges in the development of biomass conversion to chemicals and fuels. Herein, a hydrotalcite-based core–shell catalyst (Al2O3@NiMo-LDO) was synthesized by urea precipitation and ion-exchange methods, which could selectively convert bio-oil model compounds to liquid alkanes with high activity and selectivity and excellent hydrothermal stability at low pressure. In the hydrogenation of methyl palmitate, the catalyst afforded 81% conversion and 99% selectivity of n-pentadecane and n-hexadecane under low pressure, with excellent hydrothermal stability. The excellent catalytic performance of Al2O3@NiMo-LDO was attributed to the strong hydrogen activation ability, improvement of the utilization of active components under low pressure, and the increase in the number of active Mo5+ species. The superior hydrothermal stability was attributed to the core–shell structure, which avoided the influence of the specific surface area of Al2O3 that is reduced by the hydration reaction between Al2O3 and H2O at high temperature.
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ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Siyu Pan,Jun Yan,Xu Peng,Zhou Xu,Qi Zeng,Zhonghui Wang,Minzhong Zhao,Yi Chen
In the poly(vinyl chloride) (PVC) industry, waste cooking oil (WCO)-derived epoxidized fatty acid methyl esters (EFAMEs) represent a promising bio-alternative to conventional ortho-phthalate plasticizers that are being phased out due to their toxicity and nonrenewable nature. However, to improve the leaching resistance of EFAMEs, the WCO feedstock has to go through multistage distillation at particularly high temperatures under vacuum conditions for saturated component removal, resulting in intensive energy consumption, a significant waste of the feedstock, and a final bioplasticizer with a still faster leaching rate than those of ortho-phthalates. Here, we report a strategy that can Y-shape all components in WCO-derived EFAMEs with another short, polar ester chain via a nucleophilic substitution reaction of the feedstock mixture with dimethyl carbonate. This strategy entails no utilization of an energy-intensive procedure and, importantly, converts all components in the WCO feedstock into the final bioplasticizer. Relative to ordinary EFAMEs, the Y-shaped epoxidized fatty acid methyl diester exhibits a significantly suppressed leaching rate. Under certain scenarios, it even leaches at a rate equivalent to or slower than that of di-(2-ethylhexyl) phthalate (DEHP), the most ubiquitously applied member of the ortho-phthalate family. With this strategy in hand, the renewable WCO may be converted into a high-performance bioplasticizer in an energy-efficient and atom-economic manner to support the phase-out of ortho-phthalates in the PVC industry.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Wei Jia,Xin Wang
The potential mechanisms about the health risks of endogenous 3-MCPD remain elusive. Here, we researched the influences of 3-MCPD on the metabolic landscape of digested goat infant formulas via integrative UHPLC-Q-Orbitrap HRMS-MS/MS-based peptidomics and metabolomics (%RSDs ≤ 7.35 %, LOQ 2.99–58.77 μg kg −1 ). Digested goat infant formulas under 3-MCPD-interference caused metabolic perturbation by down-regulating levels of peptides VGINYWLAHK (5.98–0.72 mg kg −1 ) and HLMCLSWQ (3.25–0.72 mg kg −1 ) pertained to health-promoting bioactive components, and accelerated the down-regulation of non-essential amino acids (AAs, l -tyrosine 0.88–0.39 mg kg −1 , glutamic acid 8.83–0.88 μg kg −1 , and d -aspartic acid 2.93–0.43 μg kg −1 ), semi-essential AA ( l -arginine 13.06–8.12 μg kg −1 ) and essential AAs ( l -phenylalanine 0.49–0.05 mg kg −1 ) that provide nutritional value. Peptidomics and metabolomics interactions elucidated that 3-MCPD altered the stability of α-lactalbumin and d -aspartate oxidase in a dose-dependent manner, and affected the flavor perception of goat infant formulas, leading to a decline of nutritional value of goat infant formulas.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2023
·
IF 4.3
Qihao Wu,Wei Jiang,Jianyun Yang,Xiaoxi Si,Aoer Yi,Mingjing Wang,Ying Zhao,Shaoyun Shan,Fengmei Zhang
The volatile organic components (VOCs) of Tamarindus indica L. (TIL) pulp and the extraction of TIL were analyzed by headspace solid-phase microextraction with gas chromatography mass spectrometry (HS-SPME–GC MS) to characterize key odorants and investigate their changes during solvent extraction (SE). A total of 109 VOCs were identified in TIL pulp. Twenty-two odorants were determined to be key odorants, and 12 differential aroma components were identified using the relative odor activity value (ROAV) method and multivariate statistical analysis. Among these, phenylacetaldehyde , nonanal and phenethyl alcohol were the common key aroma components of four TIL pulps. In addition, the effect of SE on the aroma composition of TIL was analyzed according to changes in the glucose and fructose contents of TIL pulp combined with sensory evaluation. The results showed that SE affected the aroma of TIL pulp, among which the contents of ethyl palmitate, diethyl succinate, 1-tetradecene, 1-hexadecene, heptadecane , ethyl phenylacetate , and ethyl oleate showed significant differences before and after extraction. The present research refines the existing aroma composition system of TIL and provides a reference for further development and utilization of TIL.
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