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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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    Piperitenone oxide-rich Mentha longifolia essential oil and its nanoemulsion to manage different developmental stages of insect and mite pests attacking stored wheat

    Kavallieratos, Nickolas G.Nika, Erifili P.Skourti, AnnaXefteri, Despoina N....
    12页
    查看更多>>摘要：Horsemint, Mentha longifolia (L.) Huds. (Lamiales: Lamiaceae), is a member of the genus Mentha, widely used for the repellent and insecticidal effectiveness of its essential oil (EO). Several chemotypes have been reported for this species. Here, the efficacy of a M. longifolia EO, belonging to the piperitenone oxide-type, and a 10% (w/w) M. longifolia EO-based nanoemulsion (NE) were examined as wheat protectants, at 500 and 1000 ppm (mu L/kg). The two products were tested against four insect and a mite species, i.e., the red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), the confused flour beetle, Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae), the yellow mealworm beetle, Tenebrio molitor (L.) (Coleoptera: Tenebrionidae), the saw-toothed grain beetle, Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae), and the flour mite, Acarus siro L. (Sarcoptiformes: Acaridae). The NE showed a mean hydrodynamic diameter below 200 nm after preparation and no relevant changes in particle size distribution at least up to 4 months. The highest concentration of M. longifolia EO was the most effective grain protectant, causing 84.4% and 100% mortality to T. castaneum adults and larvae respectively, 42.2% and 100% mortality to T. confusum adults and larvae respectively, 100% and 34.4% mortality to T. molitor adults and larvae respectively, 100% mortality to both adults and larvae of O. surinamensis, and 87.8% and 67.8% mortality to A. siro adults and nymphs, respectively. Tribolium castaneum larvae were controlled by 500 ppm of the EO and 1000 ppm of the NE, which caused 100% and 93.3% mortality, respectively. Similarly, 1000 ppm NE caused 96.7% mortality against T. confusum larvae, while 500 ppm EO and 1000 ppm NE killed 90.0% and 91.1% of T. molitor adults, respectively. Complete mortality (100%) of O. surinamensis adults was achieved by 500 ppm EO. The findings of the current study suggest that the M. longifolia EO and the M. longifolia EO-based NE may be considered as promising alternative wheat protectants against different insect and mite storage pests, depending on their developmental stage.
      原文链接:
    • NSTL
    • Elsevier

    Valorization of arabinoxylans from Linum usitatissimum (flaxseed) and galactomannans from Leucaena leucocephala (subabul) to develop hybrid hydrogels: Rheological, morphological and thermal characterization

    Ray, AratrikaSharma, AbhinavSinghal, Rekha S.
    18页
    查看更多>>摘要：The present investigation was aimed at preparing hydrogels from galactomannans extracted from the defatted seeds of Leucaena leucocephala (subabul) (SGM) and kappa-carrageenan (xC) in an aqueous phase (pH 6.8) using KCl as ionic crosslinker. The dynamic moduli (G' and G") and Power law parameters (n' and n") of the hydrogels were optimized through full factorial design (CCD). The optimized hydrogel was prepared with SGM (6.5% w/v) and xC (1% w/v) in the presence of KCl (0.63% w/v) (GA1). A hybrid hydrogel using a combination of SGM and crude arabinoxylan from flaxseed (FX) was also optimized similarly as GA1. The optimized hybrid hydrogel was composed of FX (1% w/w), SGM (5.5% w/v), and xC (1.32% w/v) crosslinked with 0.25% w/v KCl (GAX). GAX showed higher dynamic moduli (G'-2871 Pa, G"-1711 Pa) than GA1 (G'-2589 Pa and G"-1399 Pa) due to the formation of stable interpenetrating polymer network between the hydrogel components. The structural (NMR (1H), FTIR), morphological (SEM), rheological as well as thermal studies confirmed superior characteristics of GAX than GA1. This was also evident from high gel strength (2019 N) and increased firmness (1231 N.s) of GAX. GAX also exhibited 389% water uptake ratio (q) at neutral pH and 45 degrees C, and did not show any syneresis for 72 h at 4 degrees C. The synergistic amalgamation of a galactomannan from a forest resource and an arabinoxylan from flaxseed processing byproduct not only valorizes them but also enables the development of a self-stable hydrogel that can find far reaching applications in various industrial sectors.
      原文链接:
    • NSTL
    • Elsevier

    Integrated humic acid and vermicomposting changes essential oil quantity, and quality in field-grown Lavandula angustifolia L. intercropped with Brassica nigra L.

    Sharafabad, Zohreh HabibiAbdipour, MoslemHosseinifarahi, MehdiKelidari, Abdolsamad...
    15页
    查看更多>>摘要：In recent years, increased environmental concern about the application of synthetic fertilizers for agricultural purposes has resulted in a continuous search for sustainable and environmental-friendly alternatives. However, organic farming systems will not be sustainable without a proper understanding of plant responses and the optimization of these systems. The present study used a two-year factorial design to investigate the effects of the application of humic acid and vermicompost on the essential oil (EO) quantity and quality of Lavandula angustifolia L. intercropped with Brassica nigra L. Results showed that the application of both humic acid and vermicompost increased flower yield (2371.82 kg/ha) by 16.72%, EO content (3.18%) by 22.85%, and EO yield (59.09 kg/ha) by 42.69%. Although the fertilizers were found to be effective even at the lowest rates, the highest flower yield (2522.17 kg/ha), EO content (3.87%), and EO yield (97.61 kg/ha) were observed in the higher rates of humic acid (5000 mg/L) and vermicompost (7.5 t/ha). Forty individual chemical compounds, covering over 98.12% of the compounds, were analyzed by the GC-MS technique from the lavender grown under different treatments. The results demonstrated that the EO chemical profile was affected by the fertilizers and the highest linalool, limonene, and geraniol contents were recorded in the EO samples obtained from the application of 5000 mg/L humic acid and 7.5 t/ha vermicompost. Conversely, the maximum content of geranyl acetate, linalyl acetate, and beta-caryophyllene was isolated from the untreated plants. The six constituents listed above accounted for 87.1% of differentiation among treatments based a similarity percentage (SIMPER) analysis. In conclusion, a combination of 5000 mg/L humic acid and 7.5 t/ha vermicompost can be recommended as a valid alternatives to reduce the demand for chemical fertilizers and their environmental hazards in lowly fertile areas.
      原文链接:
    • NSTL
    • Elsevier

    pH-responsive ampholytic regenerated cellulose hydrogel integrated with carrageenan and chitosan

    Armir, Nur Amira ZainulSalleh, Kushairi MohdZulkifli, AmaliaZakaria, Sarani...
    15页
    查看更多>>摘要：Regenerated cellulose (RC) that is produced from 'green' alkali/urea system has been extensively studied and fabricated into hydrogel. The versatility of RC products can be combined with other natural polymers to enhance their applicability. In this work, ampholytic polyelectrolyte RC-hydrogels were fabricated successfully via a facile technique of homogenous RC/chitosan(CS)/carrageenan(CG) in NaOH/urea aqueous system with no phase separation occurs between anionic and cationic polymers. The chemical structure of the hydrogels were characterized by using ATR-FTIR and XRD while for morphological structure, VPSEM was performed. The swelling kinetics, swelling capacity, water uptake in different pH media, gel fraction and gel degradation of hydrogels were determined. The swelling kinetics of hydrogels followed the first-order kinetic for swelling in distilled water and different pH media with all R-2 > 0.9. The addition of CS into the hydrogels also gave the highest swelling capacity and gel fraction that reached 104.30% and 97.93%, respectively. The experimental results demonstrated that ampholytic RC/CG/CS hydrogels had good water uptake in low pH solution due to macromolecular chain relaxation of CS. However, under high pH, low water uptake was recorded in all resulting hydrogels due to hydrogel's internal colloidal shrinkage due to amine group in CS accumulation and free release of sulfate group in CG. The degradation test revealed that hydrogels without CS had the huge dry weight loss after 24 days at 9.26% and all hydrogels were degraded according to surface erosion manner.& nbsp;
      原文链接:
    • NSTL
    • Elsevier

    Structural changes in biomass (yellow poplar and empty fruit bunch) during hydrothermal and oxalic acid pretreatments and their effects on enzymatic hydrolysis efficiency

    Jeong, So-YeonKoo, BonwookLee, Jae-Won
    10页
    查看更多>>摘要：In this study, the structural changes in hemicellulose and lignin of the yellow poplar (YP) and empty fruit bunch (EFB) during hydrothermal and oxalic acid pretreatment were investigated and their effect on enzymatic hydrolysis was evaluated. Hemicellulose and organosolv lignin were isolated from the biomass (raw material or pretreated biomass), and their structural properties were investigated using FTIR, GPC, and NMR. The weight loss of biomass was slightly higher with oxalic acid pretreatment (31.87-33.77%) than with hydrothermal pretreatment (30.13-32.46%) regardless of the biomass species. Under the same pretreatment conditions, the weight loss of YP (32.46-33.77%) was relatively higher than that of EFB (30.13-31.87%). The enzymatic hydrolysis yield of the pretreated biomass was higher for YP (88.83-93.75%) than for EFB (86.69-89.03%). According to the thermogravimetric analysis results, the temperature required to achieve the maximum rate of hemicellulose and organosolv lignin degradation was slightly higher for EFB (276.75 ? for hemicellulose and 369.29-380.24 & for organosolv lignin) than for YP (260.99 ? for hemicellulose and 366.67-369.74 degrees C for organosolv lignin). Most of the hemicellulose was removed during the pretreatment process, hemicellulose could not be obtained from either of the pretreated biomass. The organosolv lignin of the EFB (G: 190.91-361.96 and S/G ratio: 1.14-1.93) had more guaiacyl units (G), thus, its S/G ratio was lower than that of YP (G: 176.35-298.28 and S/G ratio: 1.17-2.44). The organosolv lignin of the EFB (1703-1730) had relatively high molecular weight and p-hydroxyphenyl unit compared to that of YP (1753-1845) after pretreatment. The guaiacyl and p-hydroxyphenyl units in the EFB may have a negative effect on the yields following enzymatic hydrolysis. The changes in chemical composition of the biomass during pretreatment may affect the enzymatic hydrolysis yield.
      原文链接:
    • NSTL
    • Elsevier

    Influence of lignocellulosic components on the anaerobic digestibility of aquatic weeds: Comparison with terrestrial crops

    Fujiwara, MasaakiKoyama, MitsuhikoAkizuki, ShinichiBan, Syuhei...
    10页
    查看更多>>摘要：Anaerobic digestion treatment of excessively growing aquatic weeds has been paid attention due to the energy recovery with low energy requirement. The effects of lignocellulosic components on anaerobic digestibility of terrestrial herbaceous plants have been extensively researched, not much work has been done on aquatic weeds. Because of the flexible structure, aquatic weeds' chemical compositions and anaerobic digestibility may differ from terrestrial plants. This study investigated the relationships between the amount and ratio of lignocellulosic components (cellulose, hemicellulose, and lignin) and the kinetic parameters (ultimate methane yield, maximum methane production rate, lag phase, and T80, which refers to the time required to produce 80% of the total methane) calculated using the modified Gompertz model. Negative correlations were found out not only between lignin contents and the ultimate methane yield but also between hemicellulose content and the maximum methane production rate. The correlations between cellulose/lignin and ultimate methane yield and between cellulose/hemicellulose and maximum methane production rate, suggesting these parameters were primarily regulated by the lignocellulosic ratios. The correlation between cellulose/lignin and ultimate methane yield including aquatic weeds and terrestrial plants was approximately fitted using the same equation. While the maximum methane production rate of aquatic weeds and terrestrial herbaceous plants was not fitted to one equation with cellulose/hemicellulose, correlated with cellulose/estimated xylose on the same equation. This might be because cellulose degradation was hindered by xylose owing to the bonding of cellulose to lignin, thus determining the degradation rate of cellulose. Therefore, while cellulose can be degraded and converted to methane, coverage by lignin and xylose limits cellulose degradability and thus regulated methane production from aquatic weed.
      原文链接:
    • NSTL
    • Elsevier

    Dirigent gene family is involved in the molecular interaction between Panax notoginseng and root rot pathogen Fusarium solani

    Deng, JieGuan, RuipanLiang, TingtingSu, Linlin...
    12页
    查看更多>>摘要：Root rot, mainly caused by Fusarium solani, severely reduces the yield and quality of Panax notoginseng (Burk) F. H. Chen. Dirigent (DIR) proteins catalyze the coupling of lignin monomers during lignin biosynthesis, making them important components of plant defense systems. In this study, a small P. notoginseng DIR gene family was isolated from P. notoginseng. A phylogenetic analysis indicated that PnDIR1 belongs to the DIR-a subfamily, whereas the other six PnDIRs belong to the DIR-b/d subfamily. The expression patterns determined by real-time PCR revealed that PnDIR transcription was up-regulated by F. solani and modulated by some hormone signals (except PnDIR5). The PnDIR1 was a cell wall localized protein, and the PnDIR1 promoter activity was induced by several plant hormones and multiple stress stimuli. The recombinant PnDIR1 protein inhibited the growth of Sclerotinia sclerotiorum and F. solani in vitro. Moreover, the overexpression of PnDIR1 in tobacco (Nicotiana tabacum) up-regulated the expression of some genes involved in the biosynthesis of lignin and lignan and considerably increased the resistance to F. solani as well as the increase in lignin accumulation. The results of this study suggest that PnDIRs may facilitate the molecular interaction between P. notoginseng and F. solani through be involved in lignin biosynthesis.
      原文链接:
    • NSTL
    • Elsevier

    Lignans with alpha-glucosidase, protein tyrosine phosphatase 1B, and aldose reductase inhibitory activities from the fruits of Viburnum cylindricum

    Zhao, Chun-ChaoZhang, Xiao-HuiChen, JiaShao, Jian-Hua...
    12页
    查看更多>>摘要：Viburnum cylindricum Buch.-Ham. ex D. Don is widely cultivated in China due to its considerable economic value. In this study, the EtOAc fraction (VCFE) of V. cylindricum fruits (VCF) was first reported to obviously reduce postprandial blood glucose levels in normal and diabetic ICR mice at 100 mg/kg, and significantly inhibit alpha-glucosidase, PTP1B, and AR activities in vitro. In order to clarify its antidiabetic components, nine undescribed lignans, including seven 9,9'-epoxylignans, viburindrins A-G (1-7), one rare variable 9,9'-epoxylignan, viburindrin H (8), and one furofuran lignan, viburindrin I (9), were isolated from VCFE by bioassay-guided fractionation, and their structures including absolute configurations were identified by comprehensive spectroscopic analyses and the comparison of the experimental and calculated ECD spectra. Compounds 1-8 exhibited significant inhibitory activities against these enzymes. Among them, compounds 1, 4, and 8 possessed the most potent inhibitory effects on alpha-glucosidase, PTP1B, and AR with the IC50 values of 14.21, 6.14, and 1.08 mu M, respectively. In addition, their inhibitory kinetics and molecular modeling analyses were also investigated. These results uncovered that VCF with the active lignans could be the potential resource for the improvement and treatment of diabetes and related complications.
      原文链接:
    • NSTL
    • Elsevier

    Honokiol inhibits growth and improves control efficiency against Phytophthora nicotianae through disrupting redox homeostasis and energy metabolism

    Wang, XianxianXie, YiLi, ZhenChen, Qianru...
    12页
    查看更多>>摘要：Tobacco black shank, caused by Phytophthora nicotianae, is one of the most destructive fungal diseases affecting tobacco plants and is responsible for significant economic losses. Honokiol, as a botanical fungicide, is preferred over chemical fungicides to control tobacco black shank due to it being less toxic to the environment. This study evaluated the in vivo and in vitro antifungal activity of honokiol against Phytophthora nicotianae. Compared with the control, significant growth inhibition was observed upon honokiol treatment from 45% to 76%, respectively, at different concentrations. In vitro experiments indicated that honokiol disrupted hyphal morphology and increased membrane permeability in Phytophthora nicotianae. Honokiol treatment disrupted the cell membrane structure and resulted in increased sugar, protein, and relative conductivity-related contents. In addition, honokiol treatment reduced catalase and adenosine triphosphatase activity and increased superoxide dismutase activity, resulting in reactive oxygen species accumulation. The maximum inhibition of adenosine triphosphatase activity (3.98 mol/g protein) was achieved at 120 min with 54 mu g/mL of honokiol. Moreover, in vivo analyses showed that honokiol protected tobacco seedlings from Phytophthora nicotianae and reduced the abundance of Fusarium pathogens; the highest control efficiency was recorded as 91.67% on day 5. Results suggest that honokiol can suppress tobacco black shank development, possibly by directly suppressing pathogen growth, and it possesses a remarkable biocontrol potential for Phytophthora nicotianae.
      原文链接:
    • NSTL
    • Elsevier

    The composition, physicochemical properties, antimicrobial and antioxidant activity of wood vinegar prepared by pyrolysis of Eucommia ulmoides Oliver branches under different refining methods and storage conditions

    Xue, RuiCui, Er-LiangHu, Guo-QuanZhu, Ming-Qiang...
    14页
    查看更多>>摘要：To enhance the quality of wood vinegar (WV), the WV prepared by pyrolyzing Eucommia ulmoides Oliver (EUO) branches at the temperature of 650 ? were refined by using different physicochemical methods. The crude WV was refined by ultra-low freezing and thawing (WVFT), charcoal adsorption (WVCA), and activated carbon adsorption (WVACA), respectively. Meanwhile, the chemical compositions, antimicrobial and antioxidant activity of the crude WV (WVC), the WV (WVS) prepared two years ago, and the photolysis WV (WVP) were investigated. The results showed that the WVFT obtained by ultra-low freezing and thawing method possessed better quality with pH of 3.45, density of 1.045 g/cm(3), refractive index of 26.85% and total organic acid of 11.00%. It was also found that WVFT had better inhibition rate of 83.33% against Bacterium prodigiosum, indication the excellent antibacterial activity. Moreover, WVFT had significant effect on scavenging rate (98.72%) for hydroxyl radicals. This research could offer some references for the refining methods of WV, and the WV was expected to be a potential candidate for materials of antioxidant and antimicrobial.
      原文链接:
    • NSTL
    • Elsevier