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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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    A review on the production and recovery of sugars from lignocellulosics for use in the synthesis of bioproducts

    Goncalves M.C.P.Cansian A.B.M.Pucci E.F.Q.Guimaraes J.R....
    24页
    查看更多>>摘要：? 2022 Elsevier B.V.In this study, concepts of systematic mapping (SM) were used to conduct a literature review covering the research on the production and recovery of sugars from lignocellulosics to synthesize bioproducts, mostly xylose-derived products. The SM approach constitutes a rigorous evidence review methodology used to catalog evidence, identifying knowledge gaps, unknown trends, and research clusters (Cook et al., 1997; James et al., 2016). Our results showed that some classical pretreatment methods (H2SO4 acidolysis and alkaline) are still among the most used methodologies for the initial processing of lignocellulosics. Some other technologies, such as liquid hot water and steam explosion, were used to minimize the production of inhibitors and waste generations related to the use of those classical pretreatments. Other eco-friendly strategies (ultrasonic, gamma irradiation, and ultra-high-pressure pretreatments) were rarely reported in our dataset and have been confined to small-scale operations thus far. The enzymatic hydrolysis stage was mainly conducted using commercial enzyme cocktails, which are more feasible and commonly used in large-scale processes than crude preparations. Physical separation systems (washing, drying, centrifugation, and macro filtration) were used to separate extracts and/or hydrolysates from unconverted biomass and then, in a few cases, purification methods (evaporation, chromatographic separation, crystallization, distillation, and precipitation) were used to separate the sugars from other components. Detoxification strategies were used in both cases. Ethanol was the main sugar-derived product addressed by the papers we assessed, followed by xylooligosaccharides, xylitol, lactic acid, and lipids. On the other hand, some products such as biogas, fatty acid methyl esters, diols, methane, and succinic acid, still constitute a minor fraction of the products targeted. The analysis of keywords revealed that many co-occurrences were found among most enzymatic activities and sugar-recovery methods, but a weak co-occurrence network was identified among pretreatment methods and sugar-derived products.
      原文链接:
    • NSTL
    • Elsevier

    Together is better: poly(tannic acid) nanorods functionalized polysaccharide hydrogels for diabetic wound healing

    You S.Shen J.Qi X.Mao R....
    6页
    查看更多>>摘要：? 2022 Elsevier B.V.Polysaccharide hydrogel dressings are strong candidates for wound healing due to their low-cost, adsorbable, biodegradable, and biocompatible features. However, they may have some drawbacks, such as static properties, weak mechanics, and the inability to fully meet the requirements of the different phases of wound repair. Enhanced functionality achieved by incorporating nanomaterials into traditional polysaccharide networks is an effective way to address these challenges. Herein, an all-in-one hydrogel dressing (OQP2) that possessed hemostasis, antibacterial, reactive oxygen species scavenging, and angiogenic properties was readily synthesized by introducing poly(tannic acid) nanorods into a polysaccharide matrix comprising oxidized β-glucan and quaternary ammonium chitosan. As expected, the OQP2 can accelerate wound healing in diabetic rat models. This study offers a convenient and facile one-pot strategy to construct multifunctional polysaccharide hydrogel dressings for treating diabetic wounds.
      原文链接:
    • NSTL
    • Elsevier

    Adopting different cotton cropping systems may regulate the spatiotemporal variation in soil moisture and affect the growth, WUE and yield of cotton

    Li X.Wang G.Wu F.Guo S....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Approximately 70% of global cotton production is under the threat of drought. Changing cropping systems is an agronomic measure that potentially coordinates production and ecology. However, little evidence is available on the characteristics of changes in the soil moisture under different cropping systems and their relationships with cotton production. This study assessed the temporal and spatial variation in the soil moisture and analyzed the relationships between the soil water content (SWC) and the biomass, yield, and water use efficiency (WUE) of cotton (Gossypium hirsutum L.) in three cropping systems (monoculture cotton (MC), wheat (Triticum aestivum L.)/delayed intercropped cotton (WIC), and wheat/direct-seeded cotton (WDC)). The spatiotemporal heterogeneity and autocorrelation of the soil moisture were affected by cropping systems and whether the soil was dry or wet. Compared with the values in 2016 (moist), the spatiotemporal heterogeneity in the SWC variation at a 10–110 cm depth in the three planting systems increased, and the autocorrelation decreased in 2017 (drought). This phenomenon was more pronounced in WIC than in MC and WDC. Compared with MC, the double-cropping system increased the SWC between cotton rows. In the double-cropping system, the cotton yield of WIC was significantly higher than that of WDC. The order of WUE from high to low was WDC>MC>WIC in 2016 and MC>WIC>WDC in 2017, and no significant difference was observed between MC and WIC in both years. Yield limitation in the double-cropping system was due to weak water absorption of roots. The growth curves of cotton roots with increasing SWC in WIC were similar to those in MC, while WDC showed faster root growth but a smaller maximum value. The roots in WDC stopped growing when the water consumption reached 150 mm. WDC with a small root system was suitable for humid regions, while WIC with a strong root system should be promoted in both humid and arid regions. The methods and results can be used to obtain a deeper understanding of the effects of different planting systems on soil moisture and cotton production and to determine their interrelationship to guide dryland cotton production and precision agriculture.
      原文链接:
    • NSTL
    • Elsevier

    Development, characterization, insecticidal and sublethal effects of Bunium persicum and Ziziphora clinopodioides-based essential oil nanoemulsions on Culex quinquefasciatus

    Baldassarri C.Spinozzi E.Torresi J.Petrelli R....
    6页
    查看更多>>摘要：? 2022 Elsevier B.V.Essential oils (EOs) represent innovative and safe botanical pesticides to be exploited in different fields, including agriculture, being often obtained by cheap and easily available plant crops. However, their use is threatened by some limits, which are mainly linked to their physico-chemical properties. In this regard, the use of nanoemulsions (NEs) usually enables to overcome these limits but often also to improve the biological activities of these products. Bunium persicum (Boiss.) B Fedtsch. and Ziziphora clinopodioides Lam. are two aromatic plants of economic interest well known for their traditional food and medical uses. Their EOs exhibited several biological properties, including a remarkable insecticidal activity against different targets. Here, the chemical analysis of the two EOs revealed the predominance of γ-terpinene (35.8%), cumin aldehyde (16.6%), γ-terpinen-7-al (14.0%), and α-terpinen-7-al (11.7%) for B. persicum, and pulegone (55.6%), piperitenone (12.8%), and iso-menthone (8.0%) for Z. clinopodioides. NEs were successfully obtained by high-pressure homogenization or ultrasonication method, using polysorbate 80 as emulsifier. The EOs and their 10% NEs were evaluated against larvae and pupae of Culex quinquefasciatus Say mosquitoes. In detail, both EOs exhibited a good larvicidal efficacy (LC50 of 35.8 and 68.9 μL L?1 for B. persicum and Z. clinopodioides, respectively). Bunium persicum EO NE showed higher efficacy than the EO alone (LC50 = 290.4 μL L?1), considering that only the 10% of the EO was encapsulated. Conversely, Z. clinopodioides NE showed the same efficacy than the EO alone (LC50 of 759.8 μL L?1). In addition, both NEs displayed significantly better sublethal toxicity compared with the EOs. Moreover, even if no significant mortality was detected in the pupal stage, only 12% of the larvae pupated and emerged as adults in the case of the NE from B. persicum. In conclusion, both EOs and their NEs could be promising candidates for the development of botanical pesticides, also considering the commercial availability and affordability of these EOs.
      原文链接:
    • NSTL
    • Elsevier

    Zein - a plant-based material of growing importance: New perspectives for innovative uses

    Jaski A.C.Horta R.P.da Silva B.J.G.Riegel-Vidotti I.C....
    9页
    查看更多>>摘要：? 2022 Elsevier B.V.Corn is an economically important crop with a broad presence worldwide, especially for providing animal feed and human consumption products, including those from industries that transform grains into starch, oil, flour, flakes, syrups, and ethanol. This review focuses on the corn derived protein zein, which is mainly obtained by the corn wet-milling process. As a plant-based material, zein emerges as a strong candidate for replacing synthetic plastics in the development of active and bioactive food packaging due to its chemical/physicochemical properties such as non-toxicity, biodegradability, processing versatility, film-forming ability, low water vapor permeability, grease/oil proof, and biocompatibility. Uses of zein point to pharmaceutical and cosmetics industries, coating agents in general, adhesives, as well as other high added-value products. New insights are presented for zein in biomedical/pharmaceutical, textile, food packaging, and environmental applications. At the same time, discussions meet issues preconized by the United Nations in the 2030 Agenda, as well as the challenge for obtaining zein via an easier, cheaper, greener, and sustainable production chain.
      原文链接:
    • NSTL
    • Elsevier

    Agro-industrial co-products upcycling: Recovery of carotenoids and fine chemicals from Citrus sp. juice industry co-products

    Myrtsi E.D.Koulocheri S.D.Evergetis E.Haroutounian S.A....
    7页
    查看更多>>摘要：? 2022 Elsevier B.V.Cold Press Essential Oil (CPEO) of Citrus fruits, a co-product of juice-making industry, is investigated herein as a sustainable source of high added value industrial products exploring for first time its potentials for simultaneous carotenoid and fine chemicals isolation. Main obstacle towards this target is the physical and chemical properties differentiation of the main CPEO ingredients. To overcome it three different separation approaches were tested on orange, lemon, and tangerine CPEOs. The results indicated as most potent the novel procedure of negative pressure azeotropic condensation, which achieved yields of carotenoid crude extract consistently above 3% in all CPEOs, (lemon: 3.2%, orange 3.9%, tangerine: 5.2%). In addition, their total carotenoid content was found to excel in recovery rates after the volatiles removal, achieving 68% in tangerine, 85% in orange, and 38% in lemon. Tangerine CPEO was further processed, concluding to the pilot scale isolation of β-cryptoxanthin, which is presented herein for first time. In specific, the application of this process yielded 1.07% of pure all-trans-β-cryptoxanthin and 95.08% D-limonene, proving the feasibility and sustainability of the proposed protocol. This paradigm of circular economy regards the transformation of a low value industrial co-product into two high added value fine chemicals. In specific, the added value of the crude tangerine CPEO, with a commercial price 7 euros per litre, after the separation and recovery of limonene and β-cryptoxanthin is significantly increased as suggested by the cumulative price of 14 270 euros per litre for both isolates (limonene: 270 euros, β-cryptoxanthin:14 000 euros).
      原文链接:
    • NSTL
    • Elsevier

    Screening of dual targeted inhibitors of 5-lipoxygenase and cyclooxygenase-2 from Oroxylum indicum by off-line two-dimensional liquid chromatography coupled with mass spectrometry

    Cheng X.-J.Bian G.-L.Li D.-Q.Kong D.-Z....
    7页
    查看更多>>摘要：? 2022 Elsevier B.V.Screening and developing dual-target inhibitors of natural 5-lipoxygenase (5-LOX) and cyclooxygenase-2 (COX-2) as anti-inflammatory drugs with higher efficacy and fewer side effects is becoming increasingly popular. In the current study, an approach by off-line two-dimensional liquid chromatography combined with mass spectrometry (2D-LC-MS) was built and verified, and was used to rapidly screen 5-LOX/COX-2 inhibitors in the extracts of Oroxylum indicum. First, the extracts were incubated with 5-LOX/COX-2 to optimize the incubation conditions. Then, off-line 2D-LC-MS screening was performed on the mixture, and the potential inhibitors were analyzed by comparing the chromatograms of the active group, blank group, and inactivated 5-LOX/COX-2 group. In addition, in vitro enzyme inhibition experiments, LPS-stimulated RAW 264.7 cells experiment and molecular docking technology were employed to confirm the findings. As a result, a total of nine compounds were confirmed as possible 5-LOX/COX-2 inhibitors, and in vitro activity assays showed that oroxin B, baicalein, oroxin A, and chrysin possessed strong inhibitory effects on 5-LOX/COX-2 (IC50 ≤154.6 μM). Meanwhile, the possible mechanism of interaction between ligands and enzyme active sites was further elucidated by molecular docking technology. The results demonstrated that off-line 2D-LC-MS was a fast, efficient, and accurate method for screening and analyzing bioactive compounds from natural products.
      原文链接:
    • NSTL
    • Elsevier

    Understanding the impact of different pretreatment methods on the conversion of Casuarina equisetifolia biomass to 5-hydroxymethylfurfural and their energy cost assessment

    Rajendran D.S.Venkataraman S.Bhattacharya T.Ramachandran K....
    13页
    查看更多>>摘要：? 2022 Elsevier B.V.The objective of this study was to compare the relative efficiencies of physical, chemical, and biological strategies in saccharification of the Casuarina equisetifolia biomass and to employ the so-derived sugars to synthesize furanic compound, namely 5-hydroxymethylfurfural catalytically. Alkali and acid treatments yielded 47.48% and 25.12% of sugars, whereas microwave and ultrasound treatment yielded 5.67% and 1.83% of sugars, respectively. Enzymatic treatment yielded 48.46% of sugars, whereas fungal treatment yielded 1.76% of sugars. The feasibility of these processes towards the industrial application was pondered by energy-cost analysis. Amongst the treatment technology, alkaline treatment and acid treatment accounted for 0.83 and 0.93 USD/kg for the cost-effective conversion of biomass into sugar syrup, respectively. Henceforth, for the dehydration of sugars, alkaline treatment was selected as the best method for the conversion to furanic compounds with silica microspheres as catalysts, producing a 21.9% yield of 5-hydroxymethylfurfural from the initial biomass with optimum process parameters of 110 °C, 25 min, with catalyst loading of 1.5:200 (w/v)).
      原文链接:
    • NSTL
    • Elsevier

    Fractionation of light-colored lignin via lignin-first strategy and enhancement of cellulose saccharification towards biomass valorization

    Pan Z.Li Y.Xu F.Zhang X....
    10页
    查看更多>>摘要：? 2022 Elsevier B.V.Highly efficient breaking lignocellulose cell wall recalcitrance towards biomass valorization still remains a great challenge. In this work, we developed a very effective lignin-first strategy using diols for direct fractionation of light-color lignin, and resulting in enhancement of enzymatic saccharification of cellulose-rich residues. The isolated lignin fraction possessed relatively higher content of β-O-4 linkages (26.6%), purity (>99%) and yield (>50%) and its brightness reached 22.0%ISO, which was 15.3, 13.5 and 1.9 folds higher than Kraft lignin, lignosulfonate and alkali lignin, respectively. In addition, the obtained nearly white-color lignin could be efficiently and directionally depolymerized into syringyl type phenols with high yields (82.0% of total phenols). Enzymatic hydrolysis efficiency of cellulose-rich residues was significantly enhanced up to 84.95% due to the more effective adsorption of cellulase under this diols strategy. Overall, the developed lignin-first strategy showed noteworthy preponderance on overcoming cell wall recalcitrance to achieve the whole lignocellulosic components valorization.
      原文链接:
    • NSTL
    • Elsevier

    Preparation of green magnetic hydrogel from cellulose nanofibril (CNF) originated from soybean residue for effective and rapid removal of copper ions from waste water

    Li P.Jian B.Liu R.Li X....
    9页
    查看更多>>摘要：? 2022At present, people are paying more and more attention to the development of sustainable biological materials. In this study, green magnetic hydrogel was prepared by blending Soybean residue cellulose nanofibrils (CNF)，poly (vinyl alcohol), diatomite and nano-Fe3O4 for Cu2+ removal. Results showed that the decrease of CNF diameter improved the mechanical property and swelling of the magnetic CNF hydrogel (the maximum tensile strength was 2.3Mpa) for better Cu2+ adsorption. Adsorption studies displayed that the adsorption of Cu2+ followed the pseudo-second-order kinetic model, and the adsorption process is mainly chemical adsorption. This work provided a feasible method to fabricate magnetic hydrogel from green renewable resource as a new and promising adsorbent.
      原文链接:
    • NSTL
    • Elsevier