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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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    M-brigde- and elicitor-assisted enhanced post-storage germination of Rauvolfia serpentina synthetic seeds, their genetic fidelity assessment and reserpine estimation

    Gantait S.Mukherjee E.Bandyopadhyay P.Bhattacharyya S....
    10页
    查看更多>>摘要：? 2022 Elsevier B.V.The present study reports an amelioration of synthetic seed germination efficiency with a simple intervention of filter paper (M-bridge) drenched in ?Murashige and Skoog liquid (?MSL) medium in Rauvolfia serpentina. Synthetic seeds were developed from in vitro shoot tips using 3% (w/v) sodium alginate and 75 mM calcium chloride. Media for synthetic seed gemination were tested in cotton bed drenched with sterile water (SW), cotton bed drenched with ?MSL medium, M-bridge drenched with ?MSL medium, and ?MS semisolid (?MSS) medium alone. Synthetic seeds inoculated on ?MSL or SW or ?MSS media, exhibited slower germination and inferior performance; however, with the involvement of M-bridge, fastest germination (5.6 ± 0.4 days) and maximum proliferation (4.8 ± 0.7 shoots with 42.8 ± 2.4 mm length, and 19.8 ± 2.7 leaves/synthetic seed after 42 days of inoculation) were recorded. Among the tested elicitors (silver nitrate, salicylic acid and sodium nitroprusside) at their different concentrations supplemented in ?MSL medium (with M-bridge), 50 μM silver nitrate resulted in 100% germination frequency and resulted in germination within 5 days. Further, the synthetic seeds were stored for 42 days at ? 20 °C, 8 °C, and 25 °C. Maximum germination efficiency was obtained in case of seeds stored at 8 °C with respect to earliness in germination (6.9 ± 0.3 days), germination percentage (71.8 ± 3.4%) and subsequent proliferation (4.9 ± 0.6 shoots with 18.9 ± 0.9 mm length, and 8.9 ± 0.7 leaves/synthetic seed). Clonal fidelity analysis of the in vitro regenerants performed using RAPD markers exhibited monomorphic banding pattern. The reserpine content of the regenerants was found to be maximum following 42 days-storage at 8 °C (126.9 μg/g), followed by a substantial decline in the synthetic seed-derived regenerants following 42-days-storage at 25 °C (120.7 μg/g) or ? 20 °C (121.8 μg/g).
      原文链接:
    • NSTL
    • Elsevier

    Gas-driven shearing nanonization of lignin particles for efficient reduction of graphene oxide

    Zhang Z.Liu W.Lv B.Ju T....
    8页
    查看更多>>摘要：? 2022 Elsevier B.V.Lignin, the second most abundant biopolymer after cellulose, is a promising but still underutilized natural reductant. Nanonization of the bulk lignin into nanoparticles provides a versatile option to enhance its reduction ability by enlarging the specific surface area and making more functional groups exposed to surface. In this work, a novel and simple gas-driven shearing nanonization method with mild operation conditions was explored for green preparation of lignin nanoparticles (LNs). LNs with an average size of ~120 nm were prepared under the working pressure as low as 0.5 MPa. The reduction ability of the as-prepared LNs was investigated by reducing graphene oxide (GO) into graphene. The results indicated that the preparation of LNs could effectively enhance the reduction ability of lignin when compared with the raw lignin. The gas-driven shearing nanonization method offers a green and simple alternative to produce LNs with high-value application prospects.
      原文链接:
    • NSTL
    • Elsevier

    Changes in soil properties, productivity and profitability as influenced by the adoption of site-specific integrated crop management technology in turmeric (Curcuma longa L.) in Eastern Himalayan acidic Inceptisol

    Bhupenchandra I.Kamei G.Sinyorita S.Chongtham S.K....
    13页
    查看更多>>摘要：? 2022 Elsevier B.V.Turmeric (Curcuma longa L.), a major spice crop in the North-Eastern Hill Region (NEHR) of India, plays a vital role in the economy of tribal farmers of this region who though practise its traditional farming. The predominance of acidic Inceptisol in NEHR further deteriorates the yield and quality of this crop fetching poor remuneration to the tribal growers. Optimal and balanced plant nutrition holds the key to realize sustainable and cogent crop yields with better quality. Hence, multi-location ‘on-farm’ experimentation on integrated crop management (ICM) technology in turmeric var. Mega Turmeric-1 were conducted in NEHR (India) during 2019 and 2020 to assess the impact on the changes in soil properties, turmeric rhizome productivity and farm profits compared to farmers’ practice (FP). The ICM technology significantly improved the available-NPK besides a substantial increase in the secondary nutrients (exchangeable Ca & Mg, and available-S) over FP. However, ICM had favourable nominal changes in the soil chemical properties (pH, EC, SOC, CEC, free Fe & Al oxides) compared to FP. On an average, the adoption of ICM satisfactorily augmented the yield attributes and turmeric rhizome yield (20.9 Mg ha?1) with a hike of ~27% over the FP besides a quantum gain in net returns to the tune of US $ 875 ha?1 over FP with an enhancement of ~34.4% compared to FP. Correlation analysis indicated that SOC, available-NPK, Ca, S and B exhibited a highly significant positive correlation with turmeric rhizome yield. Multivariate PCA exhibited that N, SOC and K were the most important soil properties attributing to the turmeric rhizome yield. Stepwise multiple regressions indicated that N, SOC and K contributed to the tune of 47.7%, 21.9% and 8.6%, respectively in augmenting the turmeric rhizome yield. Overall, the adoption of ICM technology is highly effective in improving the soil chemical properties, turmeric rhizome yield and economic returns as compared to farmers’ practice in an Eastern Himalayan acidic Inceptisol.
      原文链接:
    • NSTL
    • Elsevier

    Mechanocatalytic depolymerization of hemicellulose to xylooligosaccharides: New insights into the influence of impregnation solvent

    Chen Y.Cao Y.Shen X.Li M....
    7页
    查看更多>>摘要：? 2022 Elsevier B.V.Mechanocatalytic depolymerization of lignocellulose constitutes a new frontier in biore?nery. In this study, a weak alkali-oxidation pretreatment with sodium percarbonate was employed to isolate hemicellulose from corncob, which was comprehensively characterized by FTIR, 1H, 13C, and 2D HSQC NMR. The influences of impregnation solvent, the type and dosage of acid catalyst, and ball-milling time on the mechanocatalytic depolymerization of hemicellulose have been systematically investigated. A mathematical model based on Kamlet-Taft parameters was first proposed to reveal the relationship between the reaction conversion and the solvent properties, and the results suggested a solvent possessing a high polarity/polarizability and Lewis basicity is favorable for the reaction. Under the optimal conditions, 97.1% conversion of hemicellulose with 93.1% selectivity of xylooligosaccharides based on xylans could be achieved within 2 h. Qualitative high-resolution ESI-MS and quantitative HPAEC analysis demonstrated the good solubility of the obtained xylooligosaccharides was ascribed to the depolymerization of hemicellulose rather than the formation of sulfonated oligosaccharides.
      原文链接:
    • NSTL
    • Elsevier

    Direct sunlight and partial shading alter the quality, quantity, biochemical activities of Kaempferia parviflora Wall., ex Baker rhizome essential oil: A high industrially important species

    Sarma N.Pandey S.K.Lal M.Begum T....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Kaempferia parviflora Wall., ex Baker is a perennial plant with numerous medicinal properties. Different light intensity is known to produce variable results in crops. Keeping in view the importance of the plant, the aim of the present study was to evaluate the effect of direct and partial sunlight on K. parviflora essential oil yield, chemical profile as well as biological activities. For direct sunlight conditions K. parviflora were planted in an open field and for partial shade (75% sunlight) under a green polyethylene agro shade net during the year 2020. The essential oils extracted by hydrodistillation were chemically profiled by gas chromatography/mass spectroscopy (GC/MS) which revealed linalool as the major compound in both K. parviflora essential oil under shade cultivation (KPEOSH) and K. parviflora essential oil under direct sunlight cultivation (KPEOS) with significantly higher linalool content in KPEOSH (43.35%). The essential oil yield of KPEOSH (0.92% w/w) was found to be higher than KPEOS (0.76% w/w). The essential oils were analyzed for antioxidant, anti-inflammatory, antimicrobial, anti-cholinesterase, tyrosinase, anti-diabetic, and genotoxicity properties. Both the KPEOSH and KPEOS exhibited superior activities than the standards for the antioxidant, anti-inflammatory, anti-cholinesterase, tyrosinase, and antidiabetic properties. However, both the essential oils possessed inferior antibacterial and weak antifungal properties. Considering the genotoxicity assay, both the essential oils were found to be non-toxic. The essential oils can be analyzed for further pharmaceutical applications considering their higher biological activity as compared with standards. The present investigation suggested that partial shade conditions give higher essential oil yield than open field conditions.
      原文链接:
    • NSTL
    • Elsevier

    A universal transfer-learning-based detection model for characterizing vascular bundles in Phyllostachys

    Xu H.Zhang Y.Wang J.Zhong T....
    8页
    查看更多>>摘要：? 2022 Elsevier B.V.A comprehensive understanding of vascular bundles is the key to elucidate the excellent intrinsic mechanical properties of bamboo. This research aims to investigate the gradient distribution of fiber volume fraction and the gradient changes in the size of vascular bundles along the radial axis in Phyllostachys. The inter-nodes of twenty-nine kinds of Phyllostachys were collected, which the cross section was sanded by sanding pads with 320 mesh and scanned with a resolution of 9600 ppi. A universal transfer-learning-based vascular bundle detection model with high precision of up to 96.97% were built, which can help to obtain the characteristics of vascular bundles quickly and accurately. The total number of vascular bundles, total fiber sheath area, the length, width and area of fiber sheath of individual vascular bundles within the entire cross-section were counted and analyzed. The results showed that these parameters had a strongly positive linear correlation with the outer circumference and wall thickness of bamboo culms, but the fiber volume fraction (25.50 ± 3.51%) and the length-to-width ratio of the vascular bundles (1.226 ± 0.091) were relatively constant. Furthermore, the cross section of bamboo were divided into multi-layer sheet along the wall thickness direction and the characteristics of vascular bundle were counted in each layer. The results showed that the fiber volume fraction decreased exponentially along the radial direction from skin to core, the length-to-width ratio of vascular bundle decreased quadratically along the radial direction from skin to core, the width of vascular bundle increased linearly along the radial direction from skin to core. The trends of the gradient change in vascular bundle's characteristics were found highly consistent among bamboo species in Phyllostachys.
      原文链接:
    • NSTL
    • Elsevier

    Characterizations of “drumstick-forming” on saponin contents of Notoginseng Radix et Rhizoma and their saccharide metabolism basis of vegetative organs of Panax notoginseng

    Zhang H.Li G.Zhao C.Wen G....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.“Drumstick-forming” of Panax notoginseng refers to the drumstick-like thickening of the top stem segments of the two- and three- year-old P. notoginseng. More than 400 years of practices have shown that the “drumstick-forming” reflects the saponin increase in Notoginseng Radix et Rhizoma, but the increase connotation and its saccharide metabolism basis of P. notoginseng vegetative organs remain unclear. In this study, spectrophotometry together with HPLC and ELISA indicated that the “drumstick-forming” characterized the extremely significant increases of the Rg1 and total saponin monomer (TSM) contents of the taproots, the total triterpenoid saponin (TTS) and TSM contents of the lateral roots, the TTS, R1 and TSM contents of the rhizomes, the soluble sugar contents (SSCs) of the leaves, taproots, lateral roots and rhizomes, the sucrose contents of the leaves, stems, taproots, lateral roots and rhizomes, and the specific activities of the Rubiscos and sucrose synthases (for synthesis) of the leaves and the sucrose synthases (for cleavage) (SS-cs) and starch phosphorylases (SPs) of the taproots, lateral roots and rhizomes, the significant increases of the lateral root Re contents, the non-significant increases of the rhizome Rd contents, the ratios of the SSC average of the taproots, lateral roots and rhizomes to that of the leaves and stems, and the averages of the specific activities of the SS-cs and SPs of the taproots, lateral roots and rhizomes, and the extremely significant decreases of the rhizome Rg1 contents, the stem SSCs, the starch contents of the stems, taproots, lateral roots and rhizomes of the two- and three- year-old P. notoginseng. Collectively, this study provides a better understanding of the "drumstick-forming"-responsive increase of the saponin contents in the Notoginseng Radix et Rhizoma and its saccharide-metabolizing basis, underlying the optimization of the breeding and cultivation measures of P. notoginseng via inducing the "drumstick-forming".
      原文链接:
    • NSTL
    • Elsevier

    Secondary metabolites produced by solid-state fermentation of a neotropical Aspergillus flavus strain confer anti-mosquito activity with long shelf-life

    Felix M.K.C.Moura W.S.Santos G.R.Cangussu A.S.R....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Fungal metabolites have shown promising potential as alternative tools for controlling mosquito larvae. Here, we evaluated the insecticidal activities of secondary metabolites (smAf) obtained by solid-state fermentation (SSF) of maize substrate inoculated with spores of the fungi Aspergillus flavus and evaluated the smAf toxicity against Aedes aegypti larvae. We further applied computational approaches to predict the interactions of three potential constituents of smAf with the A. aegypti acetylcholinesterases, which consists of a relevant physiological target for insecticides. Our results revealed that esters [Hexadecenoic acid, methyl ester; (E, E) ? 9,12-octadecadienoic acid, methyl ester; (E, E) - 11,14-eicosadecanoic acid, methyl ester; (Z, Z) ? 9,12-octadecadienoic acid, ethyl ester]; chromene [2,5,5,8a-tetramethyloctahydro-2Hchromene]; fatty acids [Hexadecenoic acid] and aromatic compounds [2-hydroxy-5-methoxybenzaldehyde, propyl ether; 3-hydroxy-4-propionylphenyl acetate; N-(2,4-dimethoxyphenyl) acetamide] were present in smAf. Toxicological bioassays demonstrated that smAf exhibited similar mosquitocidal activities against A. aegypti mosquito larvae just after obtention and after 48 storage months. Our computational predictions revealed the 2,5,5,8a-tetramethyloctahydro-2 H-chromene and acetylcholinesterase as the interaction with the highest binding energy (?7.3 kcal/mol). Our findings reinforce the mosquitocidal potential of smAf and demonstrate its efficacy, even after a long storage period.
      原文链接:
    • NSTL
    • Elsevier

    Influence of the plasticizer on rice bran-based eco-friendly bioplastics obtained by injection moulding

    Alonso-Gonzalez M.Romero A.Felix M.
    10页
    查看更多>>摘要：? 2022 The AuthorsThe manufacture of eco-friendly bioplastic materials from renewable resources to replace petroleum-based plastics has attracted increasing attention. For many years, proteins, lipids and polysaccharides have been proposed as natural biopolymers sources to obtain biodegradable plastic materials. As by-product from the rice industry, rice bran, is an available and non-expensive resource of both proteins and starches, food groups that, properly processed, can be employed in the development of bioplastics. Plasticizers are essential for the manufacture of bioplastics and, when carbohydrate/protein mixtures are used, an adequate selection of plasticizers must be addressed. By these means, a material suitable for thermo-mechanical processing methods is obtained if starches are subjected to shear forces under high temperatures and water excess (gelatinisation). Moreover, additional polyol-based plasticizers, such as glycerol and sorbitol, allow obtaining reinforced products with improved elasticity when protein-based bioplastics are processed. The aim of the present study was to analyse the plasticizing effect of water combined with different proportions of glycerol or sorbitol, as well as their influence on the final bioplastic properties. Results indicate that higher water ratios produce stiffer bioplastics with improved viscoelastic moduli, maximum stress and Young′s modulus, while increasing the glycerol and sorbitol content leads to higher elasticities and water uptake capacities in general. Moreover, sorbitol seems to provide more suitable bioplastics with better tensile (up to 500% in Young′s modulus) and functional properties compared to glycerol.
      原文链接:
    • NSTL
    • Elsevier

    One-step preparation of lignin-based solid acid by carbonization and sulfonation to catalyze the synthesis of dimethyl adipate

    Dou Z.Zhang Y.Li Z.Li H....
    9页
    查看更多>>摘要：? 2022 Elsevier B.V.Lignin is a high-quality precursor of carbon materials, rich in content and low in price. Sodium lignosulfonate was used as a raw material to prepare a high-efficiency catalyst for the esterification of adipic acid and methanol to synthesize dimethyl adipate by a one-step carbonization sulfonation process. The catalyst synthesized by this method has high sulfonic acid groups, and the catalytic process does not need to use sulfuric acid and other advantages. Through characterization analysis, study the relationship between the structure of the catalyst and the catalytic performance. A preliminary study on the industrial application of the catalyst has been done. The optimal reaction conditions were reached when the catalyst dosage is 20% of the mass of adipic acid, the alkyd ratio is 8:1, the stirring speed is 600r/min, the reaction temperature is 346 K, and the reaction time is 120 min
      原文链接:
    • NSTL
    • Elsevier