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Industrial Crops and Products
Elsevier Science Publishers
Industrial Crops and Products

Elsevier Science Publishers

0926-6690

Industrial Crops and Products/Journal Industrial Crops and ProductsSCIISTPEI
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    Study on the effect of red mud and its component oxides on the composition of bio-oil derived from corn stover catalytic pyrolysis

    Wang L.Han X.Li Z.Zhang A....
    7页
    查看更多>>摘要：? 2022Red mud (RM) waste rich in metal elements was selected as a cheap catalyst for fast catalytic pyrolysis to obtain high value-added bio-oil. The structural patterns and the main oxide components of the RM were determined. In addition, the catalytic effects and mechanisms of the metal oxide components on the bio-oil composition from corn stover (CS) was elucidated. The results showed the content of ketones, furans and alkylphenol significantly increased, while the content of acids and aldehydes greatly decreased under the catalytic effects of the 800 ℃-calcined RM. Fe2O3 and CaO were the main contributor. CaO promoted the production of ketones, and the catalytic effect of Fe2O3 resulted in a good selectivity for acids and furans. Al2O3, TiO2 and SiO2 inhibited the production of methoxyphenols and promoted the production of acids. Main oxide components promoted the production of alkylphenols. The results provided scientific guidance for producing high value-added bio-oil with cheap RM catalyst.
      原文链接:
    • NSTL
    • Elsevier

    Novel seedling substrate made by different types of biogas residues: Feasibility, carbon emission reduction and economic benefit potential

    Cui Z.Cai Y.Li J.Meng X....
    16页
    查看更多>>摘要：? 2022 Elsevier B.V.High-value utilization of biogas residue is essential to drive the development of the biogas industry. This study investigated the feasibility of total or partial replacement for peat (100%, 75%, 50%, 25% and 0%) by corn straw biogas residue and dairy manure biogas residue in growth media for tomato and pepper seedlings. The experiment was arranged in a completely-randomized design, tomato and pepper seeds were sown into each media and grown under commercial nursery conditions until they reached commercial transplant size. The results showed that growth of tomato and pepper was reduced in media containing corn straw biogas residue. However, tomato and pepper seedlings growing in a media of 50% dairy manure biogas residue were considered to be the most satisfactory. The results of the bacterial community analysis showed that the highest abundance of Anaerolineaceae was found in CS100 that meaning immaturity. Furthermore, for a biogas plant with a daily biogas production of 10,000 m3, biogas energy utilization and biogas residue substitution for peat could reduce 439,437 kg/year of CO2 equivalent emissions and arouse 3300,000￥benefit per year by replacing peat. Thus, partial replacement of peat by dairy manure biogas residue as a growth media could be promoted for its wide environmental and economic benefits.
      原文链接:
    • NSTL
    • Elsevier

    Non-food bioactive products: Diversified invention of 1,2,4-oxadiazole-containing amide derivatives for novel fungicidal candidate discovery

    Hu Y.Gao Y.Wang Y.Zhang W....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.In an effort for novel fungicidal candidate discovery, a series of diversified 1,2,4-oxadiazole-containing amide derivatives were devised and synthesized. Through an extensive screening of fungicidal activity on four common phytopathogens, all the target compounds exerted satisfactory inhibitory effect on Valsa mali. A detailed and specific discussion on structure and activity relationship (SAR) indicated that the tetrahydro(iso)quinoline substitution was crucial for activity improvement. The EC50 values of compounds 6i, 6p, 6u, 6v, and 6z were far more prominent than the commercial fungicide boscalid. The biochemistry and physiology response of V. mali after treatment with the remarkable compound 6p was examined, and the fruit body production, hyphae morphology, cell membrane permeability, cell wall integrity, and pectinase activity were profoundly affected. In addition, two representative compounds 6p and 6t were picked out for theoretical calculation to assess the most paramount molecular descriptors. The highest and lowest unoccupied molecular orbital (LUMO, HOMO), molecular electrostatic potential (MEP) and electron density (ED) map of compounds were obtained, plotted, and visualized. Based on the integrated analysis of fungicidal activity, biochemistry and physiology response and theoretical calculation, this work would provide some insight for novel fungicide invention and potential mode of action study.
      原文链接:
    • NSTL
    • Elsevier

    Development of M cell-targeting starch-based nanomicelles for oral delivery of immunoactive peptides

    Wang T.Chen L.Li X.Liu K....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.We prepared nine residue peptide CKSTHPLSC (CKS9)-grafted starch stearate for the simultaneous realization of tyrosinase related protein-2 (Trp-2) shielding and microfold cell (M cell) targeting. The suited introduction of CKS9 and stearic acid endowed the prepared nanomicelles (200 ~ 250 nm) with the lower critical micelle concentration (0.0209 mg/mL) and affinity constant (2.10 ×10?7), robust encapsulation efficiency (61.59 ~ 72.23%) and loading capacity (49.43 ~ 55.71%), controllable release of Trp-2 peptide, excellent structure stability against the changes of physiological conditions, ultra-dilution and long-term storage. Approx.72% of the loaded cargos went through apical-to-basolateral transportation. The M cell targeting affinity of the designed micelles is 1.5 times stronger than that towards Caco-2 cells. All these performances can be ascribed to the special framework of the designed polymer, namely, the hydrophobic stearic acid side chains and stable M cell-targeting ligand with a higher proportion of hydrophilic domain, which ensured the formation of steady core-shell spherical nanomicelles and the full exposure of targeting ligand. These rationally designed micelles provide a promising potential for developing stable and effective drug delivery systems applicable for oral immunization.
      原文链接:
    • NSTL
    • Elsevier

    Ductile composite films of polyethylene and low grammage paper

    Cordeiro L.de Almeida Prado A.P.G.da Silva Curvelo A.A.
    9页
    查看更多>>摘要：? 2022 Elsevier B.V.To obtain high dispersion and good mechanical properties, the incorporation of cellulose in non-polar polymeric matrices is usually carried out with chemical modification of precursors or addition of compatibilizers. Despite the great advances in increasing stiffness, the resulting composites generally have their deformation compromised (dramatic decrease in ductility in comparison with neat polymer). Here, from polyethylene films and thin paper sheets, composites that combine high rigidity and high ductility were obtained by hot pressing, without additional steps or compatibilizers. The use of a structured reinforcement (low grammage paper) to prepare the composites allowed: (a) obtaining a good fiber distribution in the matrix; (b) achieve an architecture for composites that enables high deformation; (c) use of mild processing conditions; (d) obtaining via continuous processing by a heated cylinder system. The low grammage paper – PE composites exhibited a considerable increase in modulus (up to 90%) and high ductility. Therefore, as a consequence of the (i) rigidity and ductility, (ii) low price of precursors and (iii) possibility of processing by a simple and practical method, these composite films have potential industrial application (as in tarpaulins and geomembranes).
      原文链接:
    • NSTL
    • Elsevier

    Production of furfural and 5-hydroxymethyl furfural from Camellia oleifera fruit shell in [Bmim]HSO4/H2O/1,4-dioxane biphasic medium

    Huang L.Peng H.Fu G.Wan Y....
    9页
    查看更多>>摘要：? 2022 Elsevier B.V.The high-value utilization of Camellia oleifera fruit shell (CFS), which is an important waste in edible tea oil processing, is of great significance for the sustainable development of Camellia oleifera industry. In this study, the CFS after being simply pretreated (PCFS) to remove crude fat, pigment, et al., was used as material to produce furfural (FF) and 5-hydroxymethyl furfural (5-HMF) catalyzed by 1-butyl-3-methylimidazole hydrogen sulfate ([Bmim]HSO4). On the basis of comparing the superiority of microwave heating and traditional oil bath heating, on the basis of comparing the in-situ extraction of FF and HMF with four common solvents including 1,4-dioxane, methyl isobutyl ketone (MIBK), benzene, and cyclohexane, the [Bmim]HSO4/H2O/1,4-dioxane biphasic catalytic reaction system assisted by microwave irradiation was established. In this reaction system, FF was the chief product and 5-HMF was the chief by-product. The highest yields of FF and 5-HMF were 67.54 mol% and 20.97 mol%, respectively. The yield of FF was much higher than that of 5-HMF under the same reaction conditions. The kinetic analysis indicated that the hemicellulose hydrolysis to xylose catalyzed by [Bmim]HSO4 was the rate-limiting step in the production of FF. The cellulose hydrolysis to glucose and the subsequent isomerization of glucose to fructose were the rate-limiting steps in the production of 5-HMF. The rapid formation of other by-products was also one of the reasons for low yield of 5-HMF. [Bmim]HSO4 still performed excellent stability and catalytic activity after three times of cycles. FF with a purity of 95.26% could be obtained from the 1,4-dioxane phase under vacuum distillation. The relative contents of hemicellulose and cellulose and the crystallinity index of cellulose in PCFS residues decreased with the enhancement of reaction temperature and retention time. The biphasic medium used in this study was efficient for the production of FF from CFS.
      原文链接:
    • NSTL
    • Elsevier

    Eco-friendly insights on kiwiberry leaves valorization through in-vitro and in-vivo studies

    Dall'Acqua S.Costa P.Silva A.M.Delerue-Matos C....
    8页
    查看更多>>摘要：? 2022 Elsevier B.V.On the last decade, the demand for novel active skin ingredients based on sustainable principles arise as a trend. These new concerns transformed the consumer preferences, which are not actually solved by the industry portfolio. Regulatory aspects establish guidelines to assess the safety and efficacy of new cosmetic ingredients, being this step imperative to introduce a new ingredient on the market. Our last studies reported the richness of Actinidia arguta (kiwiberry) leaves in bioactive compounds with potential skin applications, but further studies are necessary to validate this extract. Therefore, the current study aimed to screen the hydroalcoholic extract of A. arguta leaves regarding elastase and hyaluronidase inhibition, achieving excellent results (65.62 ± 2.09% and 54.64 ± 4.17%, respectively). The cell viability was assessed in keratinocytes and fibroblasts (0.1–1000 μg/mL), ensuring the absence of cytotoxic effects. Afterwards, 3D models, namely a skin (EpiSkin?) and an ocular (SkinEthic? HCE, respectively) model, were used to estimate the irritant potential. The viability achieved in both models after exposure to the extract was, respectively, 55.18 ± 10.60% and 101.15 ± 5.96%. The IL-1α released for the skin and ocular models were, respectively, 0 pg/mL and 35.60 ± 2.61 pg/mL, being the extract classified as non-irritant for both models. Lastly, in-vivo studies performed through a patch test in 10 human volunteers proved the absence of allergic or irritative reactions. Overall, the results attained highlighted that the hydroalcoholic kiwiberry leaves extract is an excellent cosmetic ingredient, being not irritant to skin application.
      原文链接:
    • NSTL
    • Elsevier

    Production of antioxidative protein hydrolysates from corn distillers solubles: Process optimization, antioxidant activity evaluation, and peptide analysis

    Sharma S.Pradhan R.Manickavasagan A.Saha D....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.Bioprospects of corn distillers solubles containing a unique thermally treated blend of corn and yeast from ethanol industries were evaluated. This includes alcalase hydrolysis optimization of protein concentrate, measurement of antioxidant activities, and peptide analysis. Response surface methodology (RSM) computed optimum values of enzyme: substrate ratio and incubation time, 5.2% (w/w) and 9.3 h. Besides, artificial neural network proved to be a good predictor of responses (R2 ~ 0.94–0.97) in agreement with RSM. The optimum RSM values maximized antioxidant yield, degree of hydrolysis, DPPH-, hydroxyl-, and superoxide-radical activities. The optimal PH and its three ultrafiltered fractions revealed higher scavenging activities against radicals of DPPH (76.15–85.66%), hydroxyl (81.26–91.91%), and superoxide (35.21–54.06%) at 5.0, 5.0, and 3.0 mg. mL?1, respectively. The foremost corn (QQPIIGGA, LPPYLSPA, SNIPLSPL, NPILQPY) and yeast (NIIPSPI) peptides were identified. The greater antioxidative characteristics might be due to more hydrophobic amino acids. The results are potent and pave the way forward for alternative valorized product streams in bioethanol industries.
      原文链接:
    • NSTL
    • Elsevier

    A systematic experimental study on biochar-cementitious composites: Towards carbon sequestration

    Ghaffar S.H.Wegrzynski W.Papis B.K.Madraszewski S....
    15页
    查看更多>>摘要：? 2022 The AuthorsThe utilisation of biochar, the carbon negative product of pyrolysis, reduces the carbon footprint of the cementitious composites as it possesses the potential to replace the consumption of Portland cement. In a systematic investigation, biochar was used as a partial cement replacement for up to 20 wt% in both cement pastes and mortars. A comprehensive experimental framework was conducted to evaluate the impact of biochar replacement on the performance of (i) cement paste in terms of hydration kinetics, rheology, strength development, porosity, and (ii) mortars in terms of mechanical, thermal, and transport properties. In addition, the durability of developed mortars, including freezing and thawing resistance, thermal resistance, acid (corrosion) resistance, flammability, and smoke production, were examined. The results revealed that lower replacement rates of cement with biochar (up to 5 wt%) do not substantially change the performance of cementitious composites. However, incorporating biochar in higher dosages (i.e., 20 wt%) influenced the hydration process, reduced flexural and compressive strengths by 49% and 29%, respectively, and increased the water absorption coefficient by 60% compared to control specimens. The same cement mortar demonstrated the most promising freeze-thaw (i.e., 98% relative residual compressive strength), acid resistance as well as considerably lower thermal conductivity. In addition, regardless of biochar content, mortars did not exhibit flammability. Therefore, this study demonstrated that despite specific technical issues, biochar can be successfully incorporated into high dosage to cementitious composite as an alternative binder with minimum environmental impacts to improve durability and insulating performance of mortars.
      原文链接:
    • NSTL
    • Elsevier

    Anticipating global warming effects: A comprehensive study of drought impact of both flax plants and fibres

    Melelli A.Kervoelen A.Bourmaud A.Durand S....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Currently, the effects of global warming are one of the most important topics on the agendas of all governments and international economic and scientific organisations on the planet. Temperatures and rainfall will be especially subjected to increasing deregulation, and thus crop yields will be affected according to geographic location. Cellulosic materials, such as bast fibres, are considered one solution to decrease human environmental impact: they are a renewable resource, biodegradable and have a lower carbon emission than synthetic materials. However, their quality, yield and mechanical properties depend on environmental conditions during plant growth. In this paper, we explored the possible impact of seasonal drought linked to future climate change on flax plants and fibre quality. Two batches of the same textile flax plant cultivar were grown under two different field environmental conditions in the same year, one taken as a control under regular climatic conditions and the second one grown under drought stress. Carbon isotopic discrimination reveal an increase in water stress plant of the fibre δ13C, reflecting that plants are indeed suffering from drought stress from a physiological point of view. We characterized the mechanical properties, biochemistry and morphology parameters at both the stem and technical fibre scales. Our results showed that the plants of the two batches were morphologically different and that the drought-stressed plants were smaller, mainly in terms of the height of the stem (?28%) and diameter (?16%). Biochemical analyses highlighted a contrasting lignin content between the two batches. A difference in protein content was also measured, with an increased amount in stressed flax plants, with contrasting distributions revealed by tyrosine and tryptophan monitored by synchrotron UV fluorescence. In addition, polysaccharide composition was also quantified with an increase in mannose and an important decrease in glucose in the drought-stressed technical fibres. Surprisingly, despite the difference in biochemistry composition and morphological parameters, the mechanical properties of elementary flax fibres extracted from the two batches were not significantly different. This suggests that drought can affect the yield and biochemistry of the extracted technical flax fibres but does not necessarily impact the longitudinal mechanical performance of single fibres.
      原文链接:
    • NSTL
    • Elsevier