GEODERMA
·
2024
·
IF 5.6
Jiahui Liao,Juanping Ni,Xiaoming Zou,Han Y.H. Chen,Manuel Delgado-Baquerizo,Yuanyuan Li,Tingting Ren,Ke Shi,Honghua Ruan
Earthworms are keystone regulators of carbon exchange between terrestrial ecosystems and the atmosphere. However, exactly how earthworms regulate the composition of microbial and plant-derived carbon in soil organic matter remains poorly understood. Here we conducted a microcosm experiment with two species of endogeic earthworms ( Drawida gisti and Metaphire guillelmi ) to investigate their effects on cellular and extracellular-microbial residues versus fast and slow-decaying plant materials. We found that both species of earthworms reduced microbial residues (amino sugars or the protein content of extracellular polymeric substances (EPS)) and facilitated the decomposition of microbial residues rather than their formation. Neither earthworm species affected slow-decaying plant residues (lignin phenols). However, their effects on the fast-decaying fraction of plant residues (particulate organic matter (POM)) depended on the earthworm species. Principal component analysis (PCA) revealed that earthworms mediated two gradients between microbial and plant residues. The first gradient was between the nitrogenous fraction of microbial residues (e.g., amino sugars and EPS-protein) versus slow-decaying plant lignin, while the second gradient was between the fast-decaying POM versus EPS-polysaccharide. Our results suggest that earthworms play vital roles in mediating plant and microbial residue fractions in soil through their multifaceted mechanisms in regulating the chemical composition of organic carbon, and in understanding biological control of the global soil carbon cycle.
研究领域:
生态学
·
土壤学
✓ 已验证
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
·
2018
·
IF 3.122
Cheng Chen,Wei Zhu,Chenyu Wang,Hao Zhang,Naixi Lin
An important approach for resource utilization is to use supercritical water gasification to recover phosphorus from dewatered cyanobacteria. Most phosphorus elements are converted to solid residues after supercritical water gasification and must be transferred to liquid residues by extraction before recovery. The present study explored an environmentally efficient method to convert phosphorus directly to liquid residues via a one-step recovery process, by studying the distribution and transformation of phosphorus during supercritical water gasification of dewatered cyanobacteria. Basic additives (KOH, K 2 CO 3 , NaOH, and Na 2 CO 3 ) were used to promote the transfer of phosphorus originally concentrated in the solid form to liquid residues. A total of 74% of phosphorus was recovered as liquid residues by adding 6 wt% KOH, and total phosphorus reached 604 mg/L. Besides, pH and NH 4 + -N concentration satisfied the criteria of the struvite precipitation method. Therefore, a one-step method was established to recover nitrogen and phosphorus from liquid residues.
研究领域:
环境科学
·
生物工程
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Yufan Zhang,Li Luo,Siyue Tian,Bingjian Zhang,Qiang Li
Archaeobotany plays a vital role in understanding the origins and development of agriculture. Given the different primary crops in northern and southern China, developing a method for distinguishing between millet and rice residues is crucial. Enzyme-linked immunosorbent assay (ELISA) has unique advantages in detecting animal organic residues, but its effectiveness in detecting plant residues remains uncertain. Therefore, this study devised an optimized ELISA method for the rapid, high-throughput identification of millet and rice residues in archaeological samples. The method exhibited satisfactory sensitivity and specificity, effectively detecting plant organic residues in both categories of archaeological samples. The method’s applicability and accuracy were cross-validated through documentary records, iodine–potassium iodide testing, and phytolith analysis. This study also represents a preliminary application of ELISA in archaeobotany. With further research, this technology has the potential to become a valuable tool in plant archaeology.
研究领域:
植物考古学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2015
·
IF 2.912
Xin Li,Man-Man Wang,Guo-Ying Zheng,Lian-Feng Ai,Xue-Sheng Wang
A hydrophobic monolith (10 mm × 2.1 mm i.d.) was developed as a reusable online solid-phase extraction (SPE) sorbent coupled with LC-MS/MS for the rapid determination of five avermectin residues in foodstuffs of both plant and animal origin. The online SPE was achieved using a 10 mmol/L ammonium acetate solution as the loading solvent, and acetonitrile (MeCN) was selected for the washing step. After being transferred from the monolith into a C18 analytical column using MeCN, the analytes were analyzed by LC-MS/MS using MeCN/0.1% NH4OH (10:90, v/v) as the mobile phase. The detection limit was 2 μg/kg for five avermectins, and the recoveries in fresh pear, chili seed, bovine muscle, and milk ranged from 71.8% to 101.3% with relative standard deviations of less than 8.94%. The online SPE and determination were achieved within 15 min, and the monolithic extractor was reusable for more than 500 experiments.
研究领域:
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2021
·Vol. 10
·期 8
·1822
·
IF 4.35
Qidi Zhang,Ming Zou,Wanyu Wang,Jinyan Li,Xiao Liang
The compound, 4,4′-dinitrocarbanilide (DNC), is the marker residue of concern in edible tissues of broilers fed with diets containing anticoccidial nicarbazin (NIC). In this study, 25 fluorescein-labeled DNC derivatives (tracers) are synthesized and characterized to develop a rapid fluorescence polarization immunoassay (FPIA) for the detection of DNC in chickens using DNC monoclonal antibodies (mAbs). The effect of the tracer structure on the sensitivity of the FPIA is investigated. Our results show that after optimization, the half maximal inhibitory concentrations (IC50) and limit of detection (LOD) of the FPIA in the buffer are 28.3 and 5.7 ng mL−1, respectively. No significant cross-reactivity (CR < 0.89%) with 15 DNC analogues is observed. The developed FPIA is validated for DNC detection in spiked chicken homogenates, and recoveries ranged from 74.2 to 85.8%, with coefficients of variation <8.6%. Moreover, the total time needed for the detection procedure of the FPIA, including sample pretreatment, is <40 min, which has not been achieved in any other immunoassays for DNC from literature. Our results demonstrate that the FPIA developed here is a simple, sensitive, specific, and reproducible screening method for DNC residues in chickens.Keywords:DNC residue;FPIA;tracers;chicken muscle
研究领域:
食品科学
·
免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2023
·
IF 7.4
Xizhuang Qin,Qingya Liu,Jiachen Yu,Lei Shi,Zhenyu Liu
To understand the main reactions in direct coal liquefaction and to find out the temperature at which condensation reactions become significant, the liquefaction of a vitrinite-rich coal, Naomaohu (NMH), is studied at 380–460 °C in tetrahydronaphthalene (THN). The main focuses are on the trends of products yield and evolution of solid residues’ composition and structure. It is found that NMH is very active at 420 °C with a conversion of >90 wt% and an oil-plus-water yield of 39 wt% in 40 min. The reaction, especially the condensation behaviors at temperatures lower than 420 °C are different from those at higher temperatures as indicated by the trends in products yield and in the residue’s morphology and properties. The residues obtained at 440–460 °C contain mesophase pitch spherules. The changes in residues’ volatiles content, H/C and O/C ratios, FTIR and Raman spectra, and ESR parameters are slow at 380–420 °C but much fast at 440–460 °C. These different trends are clearly evidenced by plotting the residues’ characterization parameters against the decreasing residue yield during the reaction.
研究领域:
化学工程
·
能源科学
✓ 已验证
DOI
高影响因子
Processes
·
2024
·Vol. 12
·期 5
·1035
·
IF 2.8
Audrey Zahra,Virginia Ghita Firsty,Soo-Jeong Shin
Red ginseng extract is one of the most widely used herbal medicines to prevent and cure various diseases. Among the processed products derived from red ginseng, the water-insoluble part as red ginseng residual (RGR) becomes waste, even though it contains important ingredients. TEMPO-oxidation (TO) can be used as a pre-treatment with different degrees of oxidation (DO) (0 to 0.4) in red ginseng residual (RGR-TO) by introducing chemical oxidation and high-pressure homogenizer (HPH) as a nanofibrillation process.1H NMR was used to determine the carbohydrate composition and calculate DO, size was examined using a nanoparticle analyzer, and the zeta potential was used to determine surface charge density. RGR-TO with different concentrations had different compositions; glucose and uronic acid were the main ingredients. All treated RGR-TO showed higher oxidant levels than the untreated counterpart (RGR-TO 0). As the oxidant levels increased, the zeta potential and uronic acid increased, but the size of the nanofibril from RGR-TO decreased. The results of this study showed that TEMPO-oxidation pretreatment was effective in producing RGR cellulose nanofibril (CNF) with a variety of properties by adjusting the level of oxidation pretreatment and the number of HPH passes.
研究领域:
植物化学
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药用植物学
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 17
·
IF 12.5
Zhenggang Gong,Xianggang Weng,Deli Wu,Zhendong Lei,Guangxu Yang,Li Shuai
Increasing efforts have been devoted to developing biobased and biodegradable plastics and composites from lignocellulosic biomass. Current bioplastic production entails multiple challenging steps including monomer production from biomass as well as polymer synthesis and modification. Here, we report a practical recombination strategy to transform agricultural residues into moldable cellulose-reinforced lignin (CRL) composites. The strategy involves deconstruction of biomass particles followed by thermo-compression molding of cellulose fibers and lignin mixtures. The resulting CRL composites demonstrated excellent mechanical and thermal properties as well as water, abrasive, and flame resistance. Mechanistic studies reveal that small particle size, removal of water-soluble fractions, as well as reservation of lignin and its cross-linking reactivity have considerably positive effects on preparation of high-quality composite items. These insights offer a versatile strategy for transforming various types of low-grade biomass, such as corn stover, into eco-friendly and potentially biodegradable or compostable composites that can serve as sustainable alternatives to traditional duroplast materials.
研究领域:
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Zhipeng Li,Ruochun Zhang,Jun Huang,Dandan Yu,Zhanjun Cheng,Guanyi Chen,Peizhe Sun
The continuously growing of municipal solid waste (MSW) has posed a threat to human-being. Pyrolysis is a promising technique for MSW disposal, as it can reduce its volume and produce valuable products as well. This study evaluated the potential of carbon residue (CR) derived from waste carton as soil amendment. Additionally, considering the waste plastics, such as plastic bags, plastic tape, etc., can mix with carton in MSW, the effect of polyvinyl chloride (PVC) addition on the characteristics of CR and its environmental behavior was measured. Results showed that the CR derived from carton exhibited notable efficacy in adsorbing Cd 2+ (56.111 mg/g), pesticides and PO 4 3− (0.231 mmol/g), thereby mitigating pollutants and immobilizing nutrient in soil environment. The introduction of PVC was found to enhance the adsorption of CR for Cd 2+ (65.623 mg/g) and PO 4 3− (0.524 mmol/g), albeit exhibiting diminished performance in the removal of pesticides. Different from previous studies, this study revealed that the dissolved black carbon (DBC) released from CRs did not generate reactive oxygen species (ROS) effectively under solar irradiation, and the light screening of DBC can mitigate the photodegradation of pollutants. Furthermore, both CRs increased bacterial luminescence by approximately 70%, which indicated that no toxicity produced during the pyrolysis process. And gas chromatography-mass spectrometry (GC-MS) revealed the absence of polyaromatic hydrocarbon (PAH) in CRs. In summary, this study may provide some new insights on the disposal of MSW, and the CR made by MSW could be effective in soil amendment and reduce the leaching of pollutants and nutrient.
研究领域:
环境科学
·
土壤学
·
废弃物管理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Mengtian Yu,Dongpo He,Yuhang Zhang,Dahao He,Xing Wang,Jinghui Zhou
Acanthopanax senticosus has been used to extract active products. However, abundant Acanthopanax senticosus residues (ASR), which contain plenty of lignin are discarded after extraction. An appropriate extraction method should be chosen to obtain the lignin with such desirable properties. Thus, this study investigated the effect of alkali, milled wood, deep eutectic solvent and ethanol methods on the lignin. Lignin obtained from different extraction methods were characterized, yields, chemical structure, thermal behavior, molecular weight and phenolic content were evaluated. The results show that the process of lignin acquisition has a great influence on the properties of lignin. Moreover, the multifarious functional groups exist in lignin macromolecules , such as phenolic, ether groups and other chromophores, conferred good UV resistance to lignin. Among them, the lignin from alkali method has the most phenolic-OH groups and smallest molecular weight result in a good UV-resistant, the SPF value achieves 2.39 at 1% AL content, the alkali method was the best way to make sunscreen blended with cream take various factors into consideration. This study used lignin as a bioactive ingredient to provide UV-resistant property to sunscreen formulations. Furthermore, lignin extracted from Acanthopanax senticosus residue provides a new application for the treatment of herb residue waste.
研究领域:
植物化学
·
材料科学
·
药用植物研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOCHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 3.8
Ying-Ying Xu,Bin Zhang,Jie Bao
Industrial production of cadaverine primarily relies on whole-cell catalysis of lysine using engineered Escherichia coli as host cells. The growing interest in cadaverine as a monomer of biobased polyamides requires inexpensive, non-food carbohydrate feedstock for its bioproduction, rather than using food-derived sugars as feedstock. This study used corncob residue as the starting carbohydrate feedstock followed by enzymatic hydrolysis to obtain the sugars. Since E. coli was not tolerant to even minor inhibitor residues in corncob residue hydrolysate, the robust Corynebacterium glutamicum was used as the host bacterium followed by the metabolic modifications of secretory expression of lysine decarboxylase via Ncgl1289 and cgR_0949 , and cadaverine degradation pathway knockout. The final whole-cell catalysis of C. glutamicum recombinant using corncob hydrolysate as carbohydrate feedstock achieved a record-high 78.19 g/L of cadaverine with a conversion yield of 91%.
研究领域:
工业微生物学
·
生物工程
·
代谢工程
✓ 已验证
产品关联
DOI
高影响因子
Food Packaging and Shelf Life
·
2024
·
IF 8.5
Ren Liu,Kejun Li,Liangyue Fang,Wanru Luo,Shuangfei Wang,Chongxing Huang
The global waste rate of fresh meat products is approximately 20 – 30%, with the vast majority occurring in the consumer and retailer sectors. The use of antimicrobial preservative films can reduce fresh retail meat waste. In this study, we propose an environmentally friendly antimicrobial preservative film prepared using the residue of Pouteria campechiana pericarp as a substrate, sodium alginate as the film-forming agent, and nisin as the antimicrobial agent. This film was used to preserve duck breast meat. Nisin in the film slows the spoilage of duck breast meat by inhibiting and killing microorganisms, thereby extending its four-day shelf life. It is important to note that mouse-feeding experiments on the film have proven that it is safe and edible. This strategy provides ideas for the reuse of agricultural waste, and this edible antimicrobial film has great potential for the preservation of fresh meat.
研究领域:
食品科学
·
生物技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）