JOURNAL OF PLANT GROWTH REGULATION
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2022
·Vol. 42
·期 3
·1937-1952
·
IF 4.64
Cheng Siren,Fang Zhenming,Cheng Xianchao,Wu Yizhu,Mo Lifang,Yan Chongyang,Zhou Langshan,Ren Yong
Despite copper (Cu) being an essential nutrient for the growth and development of all living organisms, the yield and tolerance mechanisms of fragrant rice under Cu-induced stress have not been reported. In this study, we tested two fragrant rice cultivars (Meixiangzhan and Yuxiangyouzhan) at the heading stage, with four Cu doses (CuSO 4 ·5H 2 O), i.e., 0 (CK), 20 (T1), 40 (T2), and 60 mM (T3) in a pot experiment. Our results showed that T2 treatment improved the yield of Meixiangzhan and Yuxiangyouzhan by 8.33% and 18.51%, respectively, by improving grains per panicle and the seed-setting rate. Moreover, Yuxiangyouzhan had the highest yield in T2 treatment, indicating that it had better Cu-tolerance than Meixiangzhan. Both cultivars had a similar response to Cu dose treatments. While T1 and T2 improved leaf pigment contents, antioxidant enzyme activities, and soluble protein content in plant tissues, T3 treatment instead promoted higher malondialdehyde (MDA) content accumulation and regulated antioxidant attributes. Overall, low-level Cu dosing significantly improved the fragrant rice yield via modulation of the antioxidant attributes. Therefore, this study provides supporting evidence for utilizing Cu reagent or assessing Cu toxicity in fragrant rice.
研究领域:
植物科学
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农学
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环境胁迫
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产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2016
·
IF 4.917
Qing Qing,Linlin Zhou,Qi Guo,Meizi Huang,Yucai He,Liqun Wang,Yue Zhang
Na 3 PO 4 and Na 2 S were employed as efficient alkaline catalysts for the pretreatment of corn stover. To systematically obtain optimal conditions, the effects of critical pretreatment parameters including sodium phosphate concentration (1–4%), sulfidity (0–20%), pretreatment temperature (100–120 °C), and reaction time (20–60 min) on the reducing sugar yield of pretreated substrates were evaluated in a lab-scale using the response surface methodology. Pretreated under the sodium phosphate concentration of 4%, sulfidity of 10%, temperature of 120 °C, and reaction time of 40 min, the reducing sugar yield and glucose yield of the pretreated corn stover achieved 91.11% and 64.01%, respectively, with a moderate enzyme loading of 30 FPU/g substrate. Additionally, a strong correlation (R 2 = 0.971 and R 2 = 0.954) between the delignification and the reducing sugar yield (or glucose yield) was observed by this pretreatment method. These results evidently support that the combined Na 3 PO 4 -Na 2 S pretreatment is an effective and feasible method for processing lignocellulosic biomass.
研究领域:
生物技术
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生物质能
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酶解技术
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产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Rui Zhang,Yuting He,Rui Zhu,Can Zhu,Yu Jiang,Yuming Ni,Minghui Fan,Quanxin Li
Developing efficient and green pretreatment pathways is of great significance for the production of biofuels. The purpose of this work is to evaluate that iron-ion catalyzed hydrogen peroxide (Fe-HP) pretreatment can be used for the enhancement of bio-jet fuel production using corncob as a typical lignocellulosic biomass. Typically, the Fe-HP pretreatment was conducted under the following pretreatment conditions: H 2 O 2 concentration of 5.0 wt%, iron ion concentration of 400 ppm, biomass loading of 10 wt%, 70 °C and 60 min. The Fe-HP pretreated corncob shows a high sugar yield of 39.2 % (w/w) under the optimal enzymolysis conditions (50 ℃, pH 4.8, 72 h). Ethanol yield of 35.2 % (w/w) was obtained under the optimal fermentation conditions (30 ℃, pH 5.5, 72 h). Especially, the directional transformation of corncob to bio-jet fuels was achieved by integrating biomass fermentation and catalytic synthesis. High ethanol conversion of 95.9C-mol % and good jet fuel selectivity of 70.9C-mol % were obtained by using the bi-functional catalyst (HSAPO-34/NiHβ) under the optimal synthesis conditions (200 °C, 5 MPa, 3 h). Based on the biomass characterization and reactive oxygen specie’s analysis, the possible role and mechanism of the iron-ion catalyzed hydrogen peroxide pretreatment was addressed. The iron ion catalyst can accelerate the decomposition of hydrogen peroxide to form hydroxyl radicals, and thus promoting biomass depolymerization and lignin removal from lignocellulose. The pretreatment increased sugar yield and concentration during enzymatic hydrolysis, which indirectly enhanced ethanol fermentation and bio-jet fuel production.
研究领域:
生物能源
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生物质转化
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催化化学
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2021
·
IF 5.645
Hao Zhou,Qin Liu,Xiuhong Zhong,Yaqi Chu,Zhaojiang Wang,Yanqin Wang
To achieve the valorization of whole compositions of lignocellulosic biomass, flow fractionation (FF) was developed based on the flow chemistry of the major components of biomass, i.e., glucan, xylan, and lignin. Three kinds of solvent, i.e., water, formic acid, and p -toluenesulfonic acid (p-TsOH), were employed in FF treatments of poplar wood for an evaluation of performance in structure and yield of products. The advantage of FF was firstly confirmed by the nearly complete recovery of glucan in solid product, and the greatly enhanced digestibility of enzymatic hydrolysis as indicated by the glucose yield of 68.1 % at a low cellulase dosage of 10 FPU/g solid product from water treated poplar wood. The second advantage of FF was the rapid hydrolysis and very slight degradation of xylan for the three solvents explored, especially for water as indicated by the xylose yield of 80.3 % from poplar wood treated at 200 °C just for 15 min.. Last but not least, structure-preserved lignins were harvested from biomass with good yield, e.g., 40.3 % of lignin yield and 99.8 % of β-O-4 retention from poplar wood using water as solvent. Thus-obtained lignin (F72T130t30) was successfully transformed to hydrocarbons over Ru/Nb 2 O 5 catalyst with the yield of 21 wt%. In short, these remarkable performances of FF in products structure and yield build a feasible valorization of lignocellulosic biomass for sustainable biorefinery.
研究领域:
生物化学工程
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可再生资源与环境科学
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产品关联
DOI
高影响因子
HORTTECHNOLOGY
·
2011
·Vol. 21
·期 5
·533-538
·
IF 0.596
Timothy Coolong,Kenneth Seebold
The effects of fungicide program and varietal resistance on the development of cucurbit powdery mildew [PM (Podosphaera xanthii)] in pumpkin (Cucurbita pepo) were tested in 2009 and 2010 in Lexington, KY. Three fungicide programs consisted of a no-fungicide control, low input (chlorothalonil), and high input (chlorothalonil alternated with myclobutanil) were applied to three varieties of pumpkin with different levels of cucurbit PM resistance. Varieties tested were Howden, Aladdin, and Camaro, which had no, moderate, and high levels of cucurbit PM resistance, respectively. There were no significant variety by fungicide program interactions for yield, number fruit per acre, and average fruit weight in both years. In 2009 and 2010, variety significantly affected yield. Yield increases corresponded to the level of cucurbit PM resistance. The high-resistance variety, Camaro, had the greatest yields in both years, while Howden, with no PM resistance, had the lowest yields. In 2010, yield significantly increased with the intensity of fungicide program. With the exception of cull percentage in 2009, there were no fungicide program by variety interactions for yield parameters. In both years, PM disease severity, characterized by the area under the disease progress curve (AUDPC), was lowest on ‘Camaro’ and highest on ‘Howden’. In 2009, unsprayed ‘Camaro’ had similar AUDPC values as ‘Aladdin’ and ‘Howden’ treated with low- or high-input fungicide programs. In 2010, unsprayed ‘Camaro’ had less disease than ‘Aladdin’ or ‘Howden’ that had received the high-intensity fungicide program. These results suggest that yields can be maintained with a minimal fungicide program when using a variety with high cucurbit PM resistant in some environments. A high-input fungicide program may be necessary to maintain yields of varieties with low cucurbit PM resistance.
研究领域:
植物病理学
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农学
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Meizhen Jiao,Jie Lu,Jinguang Hu,Jian Du,Yanna Lv,Jinwen Hu,Yehan Tao,Haisong Wang
In this study, we introduce a novel two-step method for efficiently separating and utilizing reed biomass. The process involves seawater and ammonium chloride (SW/AC) pretreatment followed by high solid-phase ethanolamine (ETA) pretreatment. During the SW/AC pre-processing stage, metal ions and chloride ions in seawater facilitated the depolymerization of hemicellulose into xylo-oligosaccharides (XOS), yielding 44.71 %. Subsequently, the two-step SW/AC-ETA pretreatment achieved a lignin removal rate of 80.34 % and rose to yields of glucose (99.10 %) and xylose (84.95 %). Characterization via FTIR, XRD, and SEM analyses revealed significant disruption of the lignin-carbohydrate complex structure in the reed, thereby increasing cellulose accessibility from 136.99 mg/g in raw material to 526.32 mg/g. This study offers a novel, environmentally friendly, and efficient strategy for separating reed components.
研究领域:
生物化学工程
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可再生资源利用
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 20
·8036-8045
·
IF 4.569
Shengqi Xu,Lu Yang,Yixuan Wei,Yiming Jia,Meiqi Hu,Lianxia Bai,Junzheng Zhang,Xinxin Li,Shuo Wei,Jun Lu
Converting CO2 into valuable solar fuels through photocatalysis has been considered a green and sustainable technology that is promising for alleviating global warming and providing energy in an environmentally friendly manner. However, traditional photocatalysts generally suffer from low surface-reactive reaction sites, inefficient light harvesting and rapid recombination of electron–hole pairs. Lead halide perovskite materials have been considered ideal semiconductor photocatalysts for photocatalytic CO2 reduction due to their tunable band gaps, strong light absorption, and low cost. Herein, a series of L2Csn−1PbnX3n+1 (L = ba, ha, oa; X = Cl, Br, I; n = 1, 2) 2D layered perovskites were synthesized by a facile solvothermal method. The effects of alkyl amine chain length, halogen atoms and inorganic layer number on their properties were studied. More importantly, these 2D materials were used as photocatalysts for CO2 reduction without any sacrificial agents. These 2D perovskites exhibited markedly increased performance in comparison with 3D bulk materials, benefitting from the larger surface-area-to-volume ratio and faster and more efficient exciton dissociation, which achieved the highest CO yield of 158.69 μmol g−1 h−1 and CH4 yield of 6.9 μmol g−1 h−1 through the design of the photocatalytic system. In addition, the influence of light source conditions on photocatalysis was studied systematically, including light source intensity and wavelength. The experimental results indicated that an appropriate solvent, high light intensity and monochromatic light source matching the wavelength of exciton absorption can effectively improve the photocatalytic efficiency.
研究领域:
材料科学
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环境科学
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化学工程
·
光化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2019
·
IF 5.439
Zengshuai Zhang,Liang Guo,Yi Wang,Yangguo Zhao,Zonglian She,Mengchun Gao,Yiding Guo
Fe 3 O 4 nanoparticles (FNP) were implemented in two-stage anaerobic digestion to enhance the biogas production and waste sludge reduction in this study. The degradation and transformation of extracellular polymeric substances (EPS) and dissolved organic matters (DOM) under optimal FNP concentration during two-stage anaerobic process with heat pretreated waste sludge was investigated by analyzing the changes of soluble chemical oxygen demand (SCOD), carbohydrate and protein in EPS and DOM. FNP addition significantly enhanced volatile fatty acids (VFAs) production. The optimal dosage of FNP was 100 mg/L yielded 11.9 ml H 2 /g VS hydrogen and 109.8 ml CH 4 /g VS methane, which increased by 15.1% of hydrogen yield and 58.7% of methane yield compared with that of control. The maximum volatile suspended solids (VS) reduction was 46.9% with the addition of 100 mg/L FNP compared with that of control (34.3%). NH 4 + -N production was inhibited with 20, 50, and 100 mg/L FNP addition comparing with control.
研究领域:
环境工程
·
生物技术
·
废物管理
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2023
·Vol. 12
·期 7
·1369
·
IF 5.2
Fenghong Deng,Xiuting Hu,Yueru Wang,Shunjing Luo,Chengmei Liu
Rice bran, rich in feruloyl arabinoxylan, is a good source of feruloyl oligosaccharides (FOs). To prepare FOs, bran was often hydrolyzed by amylase and protease to remove starch and protein and then hydrolyzed by xylanase, which was time-consuming and had a low yield. To solve the above problems, enzymatic extrusion was used to treat rice bran, and the effects of traditional hydrolysis, a combination of traditional extrusion and hydrolysis (extrusion-hydrolysis) and enzymatic extrusion on the yield of FOs were investigated and compared in this study. It was found that traditional extrusion and enzymatic extrusion significantly increased the yield of FOs. Particularly, the yield of FOs resulting from enzymatic extrusion was increased to 5.78%, while the yield from traditional hydrolysis was 4.23%. Microscopy analysis showed that extrusion damaged the cell wall of bran, which might increase the accessibility of xylanase to arabinoxylan and the yield of FOs. Spectroscopy analysis suggested that FOs obtained by different pretreatments had similar structures. It was obvious that enzymatic extrusion saved the time for removal of starch and protein and increased the yield of FOs. In addition, the highest yield of FOs was found at the moisture content of 30% and the screw speed of 50 rpm. This study provided an efficient method for the preparation of FOs that is suitable for industrial production.Keywords:rice bran;feruloyl oligosaccharides;enzymatic extrusion;yield
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Antibiotics-Basel
·
2022
·Vol. 11
·期 6
·807
·
IF 5.222
Jing Cao,Yajie Wang,Guanzhao Wang,Pingping Ren,Yongning Wu,Qinghua He
Antimicrobials may be used to inhibit the growth of micro-organisms in the cultivation of mung bean sprouts, but the effects on mung bean sprouts are unclear. In the present study, the growth performance, morphology, antimicrobial effect and antimicrobial residues of mung bean sprouts cultivated in typical antimicrobial solutions were investigated. A screening of antimicrobial residues in thick-bud and rootless mung bean sprouts from local markets showed that the positive ratios of chloramphenicol, enrofloxacin, and furazolidone were 2.78%, 22.22%, and 13.89%, respectively. The cultivating experiment indicated that the production of mung bean sprouts in antimicrobial groups was significantly reduced over 96 h (p< 0.05). The bud and root length of mung bean sprouts in enrofloxacin, olaquindox, doxycycline and furazolidone groups were significantly shortened (p< 0.05), which cultivated thick-bud and rootless mung bean sprouts similar to the 6-benzyl-adenine group. Furthermore, linear regression analysis showed average optical density of 450 nm in circulating water and average production had no obvious correlation in mung bean sprouts (p> 0.05). Antimicrobial residues were found in both mung bean sprouts and circulating water. These novel findings reveal that the antimicrobials could cultivate thick-bud and rootless mung bean sprouts due to their toxicity. This study also proposed a new question regarding the abuse of antimicrobials in fast-growing vegetables, which could be a potential food safety issue.Keywords:Vigna radiata;mung bean sprouts;antimicrobials;production;morphology;residues
研究领域:
食品科学
·
植物生理学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Plant Ecology
·
2014
·Vol. 8
·期 4
·436-448
·
IF 2.284
Zhang Shujuan,Wang Li,Ma Fang,Bloomfield Keith J.,Yang Jixian,Atkin Owen K.
AimsOur study quantified the combined effects of fertilization and inoculation with arbuscular mycorrhizal fungi (AMF) on grain yield and allocation of biomass and nutrients in field-grown rice (Oryza sativa L.).MethodsA two-factor experiment was conducted at a field site in northeast of China (in Shuangcheng, Heilongjiang Province, Songhua River basin): six nitrogen–phosphorus–potassium fertilizer levels were provided (0, 20, 40, 60, 80 and 100% of the local norm of fertilizer supply), with or without inoculation with Glomus mosseae. At maturity, we quantified the percentage of root length colonization by AMF, grain yield, shoot:root ratios, shoot N and P contents and nutrients allocated to panicles, leaves and stems.Important FindingsAs expected, inoculation resulted in greatly increased AMF colonization, which in turn led to higher shoot:root ratios and greater shoot N contents. Shoot:root ratios of inoculated rice increased with increasing fertilization while there was a significant interaction between fertilization and inoculation on shoot:root ratio. Additionally, AMF inoculation increased panicle:shoot ratios, panicle N:shoot N ratios and panicle P:shoot P ratios, especially in plants grown at low fertilizer levels. Importantly, inoculated rice exhibited higher grain yield, with the maximum improvement (near 62%) at the lower fertilizer end. Our results showed that (i) AMF-inoculated plants conform to the functional equilibrium theory, albeit to a reduced extent compared to non-inoculated plants and (ii) AMF inoculation resulted in greater allocation of shoot biomass to panicles and increased grain yield by stimulating N and P redistribution to panicles.
研究领域:
植物学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Jinghui Xu,Lianyi Zhu
Copyrolysis is a potential method for the collaborative disposal of biomass and plastics. There is an interaction between biomass and plastics during copyrolysis. In this work, a combination of ReaxFF-MD simulation and experimental validation was used to investigate the pyrolysis reaction process of the biomass and plastic, observing the evolution of free radicals at the molecular level and exploring the distribution of pyrolysis products. TG-MS results show that reaction temperature ranges for cellulose and PVC are 296–400 and 267–480 °C, respectively. HCl is the main product of PVC pyrolysis, and mixing with cellulose will reduce the yield of HCl. The ReaxFF method was used to model the pyrolysis of cellulose and PVC. The modeling temperature is much higher than the real reaction temperature, which is attributed to the time scale of picoseconds of ReaxFF-MD modeling. Modeling results show that the yield of HCl of the cellulose/PVC mixture is obviously lower than that of pure PVC. When mixed with cellulose, the HCl release is largely inhibited and more chlorine elements are retained in the pyrolysis hydrocarbon fraction or solid products.
研究领域:
能源与燃料化学
·
环境科学
✓ 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）