Plants-Basel
·
2023
·Vol. 12
·期 6
·1414
·
IF 4.5
Xiaoyun Huang,Chengwu Fan,Dongyi Xie,Hongxing Chen,Song Zhang,Hui Chen,Song Qin,Tianling Fu,Tengbing He,Zhenran Gao
To study the synergistic effects of water management and silicon (Si) foliar spraying on the uptake and transport of cadmium (Cd) in rice, we designed four treatments: conventional intermittent flooding + no Si foliar spraying (CK), continuous flooding throughout the growth stage + no Si foliar spraying (W), conventional intermittent flooding + Si foliar spraying (Si) and continuous flooding throughout the growth stage + Si foliar spraying (WSi). The results show that WSi treatment reduced the uptake and translocation of Cd by rice and significantly reduced the brown rice Cd content, with no effect on rice yield. Compared with CK, the Si treatment increased the net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr) of rice by 6.5–9.4%, 10.0–16.6% and 2.1–16.8%, respectively. The W treatment decreased these parameters by 20.5–27.9%, 8.6–26.8% and 13.3–23.3%, respectively, and the WSi treatment decreased them by 13.1–21.2%, 3.7–22.3% and 2.2–13.7%, respectively. The superoxide dismutase (SOD) and peroxidase (POD) activity decreased by 6.7–20.6% and 6.5–9.5%, respectively, following the W treatment. Following the Si treatment, SOD and POD activity increased by 10.2–41.1% and 9.3–25.1%, respectively, and following the WSi treatment, they increased by 6.5–18.1% and 2.6–22.4%, respectively. Si foliar spraying ameliorated the detrimental effects of continuous flooding throughout the growth stage on photosynthesis and antioxidant enzyme activity. We conclude that synergistic continuous flooding throughout the growth stage, combined with Si foliar spraying, can significantly block Cd uptake and translocation and is therefore an effective means of reducing the accumulation of Cd in brown rice.Keywords:water management;foliar spraying;Si;cadmium;photosynthesis
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Peng Zhu,Han Yin,Jiajiao Wei,Jianmeng Wu,Dehai Ping,Xingqun Zhang
Capparis spinosa L. (CSL) is used in traditional medicinal purposes for wound dressing because it contains natural phenolic and flavonoid active compounds. In the current study, a bilayer of biocompatible and mechanically stable nanofiber scaffolds with polycaprolactone (PCL)/zinc oxide and Capparis spinosa L. ethyl acetate extract (CSLE)/polylactic acid (PLA) layers was successfully prepared by an electrostatic spinning technique. Microstructural observations carried out by scanning electron microscopy (SEM) have shown that the nanofibers with a smooth surface are continuous and bead-free, and that the size distribution is uniform, with an average diameter of 314.15 nm. The results of careful observation further suggested that polymers in the nanofibers have excellent compatibility with drugs. The results of Fourier transform infrared (FTIR) spectroscopy suggested that CSLE and zinc oxide nanoparticles (ZnO) were successfully loaded in the nanofiber membranes. Water contact angle measurements revealed that the bilayer nanofiber membranes exhibited satisfactory wettability (outside layer, 130°; inner layer, 72.4°). Tensile testing showed that the bilayer PCL/ZnO-CSLE/PLA nanofibers remained unbroken until reaching 10.69 MPa, which is much higher than the tensile strengths of the individual layers or the individual components. Moreover, agar disk diffusion assessment confirmed that the bilayer nanofiber membranes obviously hindered bacterial growth. Cytotoxicity studies showed that the bilayer nanofiber membranes effectively accelerated cell proliferation . The investigated PCL/ZnO-CSLE/PLA bilayer nanofibers have potential for use as membranes for wound dressing applications.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Ziwei Wang,Rui An,Yuxuan Dai,Hongxia Luo
In this work, carbon dots (CDs) were produced by one-step ultrasound technology with glucose as the precursor. The effective synthesis of CDs was characterized by Raman spectroscopy and UV-visible spectra. The as-prepared CDs were fixed on a glassy carbon electrode (GCE) via electrochemical deposition to fabricate CDs/GCE, which simultaneously detected dopamine (DA), uric acid (UA), L-tryptophan (Trp) and theophylline (TP). With the differential pulse voltammetry technique, the oxidation peak currents of these four biomolecules were significantly enhanced on CDs/GCE compared to those on bare GCE. The potential differences of DA-UA, UA-Trp, and Trp-TP were computed as 145 mV, 381 mV, and 323 mV, respectively. The broad linear ranges were 0.5-50 μM for DA, 3-75 μM for UA, 1-65 μM for Trp and 10-200 μM for TP with limits of detection (LODs) of 0.007 μM, 0.011 μM, 0.11 μM and 0.33 μM (S/N = 3), respectively. The CD/GCE sensor had good stability and strong anti-interference ability and was applicable to detecting actual samples.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Shiyang Li,Longdou Tu,Yeqiang Lu,Mingjie Lin,Junmei Ma,Chaojie Bai,Congjie Gao,Lixin Xue
A novel strategy was developed to build high-performance thin film composite (TFC) total heat exchange membranes (THEMs) by in situ growing ZIF-8 crystalline micro-leaves (ZIF-L) from Polyethyleneimine (PEI) coated on polysulfone (PSF) ultra-filtration substrates. It was found that flexible PEI polymeric chains could tightly cross-link and seal large masses of ZIF-L micro-leaves (ZIF/PEI wt. ratio up to 18.5) to thwart CO 2 permeation, on top of PSF substrate. Such PEI cross-linking could also effectively open up the internal channels of ZIF-L micro-leaves to enhance moisture permeance and latent heat recovery without trading off CO 2 gas barring property. ZIF-L in varied shapes protruded into the air stream could provide ultra-rough surfaces with increased surface area for improved total energy recovery efficiency. Optimized PEI/ZIF-L TFC THEMs showed ultra-low CO 2 permeance of 0.5–8 GPU and ultra-high total heat recovery rates of 68–74%.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Qianqian Feng,Wei Yang,Zhiyun Peng,Guangcheng Wang
Oxalis corniculate L. ( O. corniculate ) was used to treat diabetes in Chinese folk as a popular tea drink. In this work, 31 compounds from O. corniculate were screened and identified as potential α-Glucosidase inhibitors (α-GIs). Among them, 6 compounds displayed stronger inhibitory activity than acarbose (IC 50 = 212.9 ± 5.98 μg/mL). Especially, the most effective compounds quercetin (Qu, IC 50 = 4.70 ± 0.40 μg/mL) and luteolin (Lu, IC 50 = 15.72 ± 0.75 μg/mL) inhibited α-Glu in competitive and mixed manners, respectively. Moreover, fluorescence quenching , circular dichroism (CD), and molecular docking study revealed that they can arouse the changes in the secondary structure and hydrophobic micro-environment of the enzyme mainly through a hydrophobic binding. Furthermore, it was observed that oral administration of Qu (20 mg/kg) can significantly reduce postprandial blood glucose (PBG) levels in mice vs. the control group. To sum up, the above research confirmed that O. corniculate could prevent and treat postprandial hyperglycemia as a good tea drink, and the plant was an excellent source to obtain natural α-GIs.
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Food Bioscience
·
2023
·
IF 5.2
Jie Tang,Chaoran Yang,Xiaoting Qin,Jingyu Si,Xuewen Dong,Xiaobo Hu,Qiang Yu
Citrus aurantium L. (CAL) was a potential low-cost source of soluble dietary fiber (SDF). To make full use of this resource, a considerable efficiency cellulose degrading strain ( Penicillium griseofulvum ) was screened from soil humus and used in the modification of CAL-SDF. After fermentation by Penicillium griseofulvum , the structure characteristics and adsorption properties of CAL-SDF were improved. Under the optimum fermentation conditions, the yield of SDF enlarged from 5.47% to 20.0%. Scanning electron microscope (SEM) and Fourier infrared spectroscopy (FTIR) analysis showed that the microstructure became loose and porous after fermentation, unfermented SDF (U-SDF) and fermented SDF (F-SDF) had characteristic intake peaks of polysaccharide . The results of X-ray diffraction (XRD) and thermogravimetric analysis (TGA) showed that the crystallization degree (from 16.50% to 23.15%) of SDF was improved by fermentation, which increased the thermal stability of SDF. The monosaccharide composition and average molecular weight (Mw) results showed that fermentation altered the monosaccharide percentage of SDF as well as significantly reduced the molecular weight (from 576,914 to 112,977 Da). Together, these alterations reduced the water holding capacity (from 11.31 to 1.31 g/g) and oil holding capacity (from 14.24 to 12.86 g/g) of SDF, but significant ( P < 0.05) increased water solubility (from 89.35% to 92.09%), the glucose dialysis retardation index (GDRI), cholesterol adsorption capacity (CAC) and nitrite adsorption capacity (NIAC). In summary, Penicillium griseofulvum could be used as a potential strain for the modification of the CAL-SDF. Moreover, F-SDF may be used as a functional food component, which will increase CAL's value proposition.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Tianle Wu,Peng Wang,Yuyu Zhang,Ping Zhan,Yu Zhao,Honglei Tian,Wanying He
Mutton possesses a typical flavor, known as “muttony” or “goaty”, which significantly limits consumers’ acceptability and its further popularization. Generally, this unpleasant flavor originates from mutton tallow. Thus, we first characterized the key volatiles of the cooked mutton tallow (CMT) via gas chromatography-mass spectrometry/olfactometry (GC–MS/O) and odor activity value (OAV). Combined with aroma recombination and omission tests, eleven compounds, involving 4-methyloctanoic acid, 4-methynonanoic acid, octanoic acid, decanoic acid, hexanal, heptanal, ( E )-2-octenal, ( E )-2-nonenal, ( E )-2-decenal, 2-nonanone and 2-penty-furan, were screened out to be responsible for the “muttony” flavor. The objective of this study was to investigate the sensory property and acceptability of CMTs, elaborated with 4 different levels of thyme phenolic extract (TPE), through descriptive sensory analysis and key muttony-related compounds identification. The results showed that, of different TPEs employed, CMT plus TPE3 was the most effective strategy to control the key “muttony” contributors, thereby to improve flavor profile of CMT.
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BRAIN RESEARCH
·
2023
·
IF 2.9
Yu Chen,Yimeng Zhang,Wei Lin,Ying Tang,Liang Chen,Ying Gao,Guangcheng Gao,Xin Luo,Aiqin Chen,Chun Lin
Chronic postsurgical pain (CPSP) and its emotional comorbidities poses health burden to patients who have received the surgical treatment. However, its underlying mechanism remains unclear. Emerging studies indicate that magnesium deficiency is associated with neurological diseases, and magnesium supplement confers protection under these disease conditions. In this study, we examined the role and mechanism of magnesium deficiency in the pathology of surgery-induced allodynia and negative emotion using a rat model of skin/muscle incision and retraction (SMIR) and investigated the therapeutic effects of magnesium supplementation by oral magnesium-L-Threonate (L-TAMS) in SMIR-injured rats. In the SMIR model, rats developed mechanical allodynia and anxiodepressive-like behaviors. Further, SMIR caused microglia and astrocyte activation and enhanced expression of pro-inflammatory cytokine (TNF-α, IL-1β and IL-6) in the anterior cingulate cortex (ACC). Importantly, magnesium ion (Mg 2+ ) levels decreased in the serum and cerebrospinal fluid (CSF) of SMIR-injured rats, which exhibited high correlation with pain and emotion behavioral phenotypes in these rats. Repeated oral administration of L-TAMS increased serum and CSF levels of Mg 2+ in SMIR-injured rats. Notably, L-TAMS administration reversed SMIR-induced mechanical allodynia and anxiodepressive-like behaviors but did not affect pain and emotional behaviors in sham rats. Moreover, L-TAMS administration suppressed SMIR-caused glial activation and proinflammatory cytokine expression in the ACC but had no such effect in sham rats. Together, our study demonstrates the contributing role of magnesium deficiency in the pathology of surgery-induced chronic pain and negative emotion. Moreover, we suggest that L-TAMS might be a novel approach to treat CPSP and its emotional comorbidities.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Shujuan Zhang,Yanpeng Mao,Lai Wei,Zhanlong Song,Xiqiang Zhao,Wenlong Wang
The use of thermal conversion to convert Chinese patent medicines (CPM) residues into porous carbon-based materials and carbon dots (CDs) has effectively resolved the challenges associated with resource waste and environmental pollution while enhancing the added value of CPM residues. In this study, biochar and N-doped CDs with high quantum yield (QY) were simultaneously prepared from fermentation residues by employing a hydrothermal carbonization method without any chemical reagents . The obtained biochar had remarkable adsorption capacity, with an iodine adsorption value of 693.22 mg g –1 . The QY of N-doped CDs could reach to 36.17 % by the mean of self-doping due to the high nitrogen content of the fermentation residues. Considering the structural integrity and permeable porous structure of the two-dimensional leaf-like zeolitic imidazole framework (ZIF-L), N-doped CDs were encapsulated into ZIF-L to form novel fluorescent composites (N-doped CDs@ZIF-L). Moreover, N-doped CDs@ZIF-L as a novel fluorescent probe could be efficiently quenched in the presence of tetracycline (TC), doxycycline (DOC), and chlortetracycline (CTC) by static quenching and the inner filter effect . Notably, the fluorescent probe exhibited a good linear relationship with the TC, DOC, and CTC at 0–50, 0–50, and 0–45 μM, respectively, with limits of detection of 0.025, 0.033, and 0.027 μM, respectively. This probe could be employed to detect TC antibiotics in honey and milk, suggesting that it had the great potential for applications in environmental monitoring and food safety.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Huibing Chi,Bingjie Xia,Juan Shen,Xiaoyu Zhu,Zhaoxin Lu,Fengxia Lu,Ping Zhu
Type II L-asparaginase as a pivotal enzyme agent has been applied to treating for acute lymphoblastic leukemia (ALL) and efficient mitigation of acrylamide formed in fried and baked foods. However, low activity, narrow range of pH stability, as well as undesirable glutaminase activity hinder the applications of this enzyme. In our work, A novel type II L-asparaginase (CgASNase) from Corynebacterium glutamicum with molecular mass of about 35 kDa was chosen to express in E. coli . CgASNase shared only 27 % structural identity with the reported L-asparaginase from Helicobacter pylori . The purified CgASNase showed the highest specific activity of 1979.08 IU mg −1 to L-asparagine, compared with reported type II ASNases in the literature. CgASNase displayed superior stability at a wide pH range from 5.0 to 11.0, and retained about 76 % of its activity at 30 °C for 30 min. The kinetic parameters K m (Michaelis constant), k cat (turnover number), and k cat / K m (catalytic efficiency) values of 4.66 mM, 79,697.40 min −1 , and 17,102.45 mM −1 min −1 , respectively. More importantly, CgASNase exhibited strict substrate specificity towards L-asparagine, no detectable activity to l -glutamine. To explore its ability to catalyze L-asparagine, CgASNase was supplied in frying potato chips, which produced the fries with 84 % less acrylamide content compared with no supply. These findings suggest that CgASNase presents excellent properties for chemotherapy against diseases and great potential in the food processing industry.
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Foods
·
2022
·Vol. 11
·期 22
·3590
·
IF 5.561
Qingquan Fu,Shangxin Song,Tianlan Xia,Rongrong Wang
Effects of different levels (1%, 3% and 5%) of cherry powder on the physiochemical properties and antioxidant activity of Jiangsu-type sausages were investigated at 4 °C for 30 days. The results show that the sensory evaluation values and physicochemical properties of the sausages had no significant differences compared to the control group when cherry powder addition was 1%, and the alcohols, aldehydes and esters were increased after the addition of cherry powder improved the flavor of sausages. However, higher concentration of cherry powder (3% and 5%) exerted adverse influences on sensory evaluation values and physicochemical properties of sausages compared with the control. The addition of cherry powder could better inhibit lipid and protein oxidation of sausages, and the cherry powder concentration has a positive correlation with its effect on the inhibition of lipid and protein oxidation. In addition, cherry powder could effectively control TVB-N values of sausages during chilled storage. All these results indicate that 1% cherry powder could not only guarantee the physicochemical properties of sausages, but also inhibited the oxidation of sausages during chilled storage.Keywords:cherry powder;sausage;physiochemical property;oxidation stability;volatile flavor substance
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jingqiu Li,Yuming Xie,Mengjue Cao,Yi Feng,Jianfeng Yao
The metal ion etching induced transformation of zeolitic imidazolate frameworks (ZIFs) to layered double hydroxides (LDHs) is closely related to the etching conditions. Here, by tuning the Ni 2+ etching conditions (e.g., initial Ni 2+ concentration and etching time), Co-ZIF-L templated CoNi-LDH with diverse morphologies and tailorable compositions are obtained and their resultant electrochemical properties are optimized. Mechanism study reveals that the etching conditions significantly affect the disassembling rate of Co-ZIF-L as well as the formation rate of CoNi-LDH, leading to the morphological and compositional variance of etched samples, which further results in their distinct electrochemical activities. The resultant asymmetric supercapacitor assembled with Co-ZIF-L derived CoNi-LDH and activated carbon can achieve a maximum energy density of 77.3 Wh/kg at a power density of 700 W/kg with the capacity retention of 85.7 % after 2000 cycles, superior or comparable to other advanced CoNi-LDH based supercapacitors .
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危险品化学品经营许可证（带存储）