MOLECULES
·
2023
·Vol. 28
·期 2
·819
·
IF 4.6
Wenlin Zhang,Yuhong Zhao,Qinhong Liao,Zhexin Li,Dengwei Jue,Jianmin Tang
In this study, sweet-potato-vine-based porous carbon (SPVPC) was prepared using zinc chloride as an activating and pore-forming agent. The optimised SPVPC exhibited abundant porous structures with a high specific surface area of 1397.8 m2g−1. Moreover, SPVPC exhibited excellent adsorption characteristics for removing methylene blue (MB) from aqueous solutions. The maximum adsorption capacity for MB reached 653.6 mg g−1, and the reusability was satisfactory. The adsorption kinetics and isotherm were in good agreement with the pseudo-second-order kinetics and Langmuir models, respectively. The adsorption mechanism was summarised as the synergistic effects of the hierarchically porous structures in SPVPC and various interactions between SPVPC and MB. Considering its low cost and excellent adsorption performance, the prepared porous carbon is a promising adsorbent candidate for dye wastewater treatment.Keywords:porous carbon;sweet potato vine;adsorption;methylene blue
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Advanced Research
·
2020
·
IF 6.992
Yinyin Liao,Lanting Zeng,Shunfa Rao,Dachuan Gu,Xu Liu,Yaru Wang,Hongbo Zhu,Xingliang Hou,Ziyin Yang
Sweetpotato weevil is among the most harmful pests in some major sweetpotato growing areas with warm climates. To enable the future establishment of safe weevil-resistance strategies, anti-weevil metabolites from sweetpotato should be investigated. In the present study, we pretreated sweetpotato leaves with exogenous chlorogenic acid and then exposed them to sweetpotato weevils to evaluate this compound’s anti-insect activity. We found that chlorogenic acid applied to sweetpotato conferred significant resistance against sweetpotato-weevil feeding. We also observed enhanced levels of chlorogenic acid in response to weevil attack in sweetpotato leaves. To clarify how sweetpotato weevils regulate the generation of chlorogenic acid, we examined key elements of plant-herbivore interaction: continuous wounding and phytohormones participating in chlorogenic acid formation. According to our results, sweetpotato weevil-derived continuous wounding induces increases in phytohormones, including jasmonic acid, salicylic acid, and abscisic acid. These phytohormones can upregulate expression levels of genes involved in chlorogenic acid formation, such as IbPAL , IbC4H and IbHQT , thereby leading to enhanced chlorogenic acid generation. This information should contribute to understanding of the occurrence and formation of natural anti-weevil metabolites in sweetpotato in response to insect attack and provides critical targets for the future breeding of anti-weevil sweetpotato cultivars.
研究领域:
植物科学
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昆虫学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
Microorganisms
·
2020
·Vol. 8
·期 3
·319
·
IF 4.152
Xuewei Li,Beibei Li,Shurui Cai,Yu Zhang,Mingjie Xu,Chunmei Zhang,Bo Yuan,Ke Xing,Sheng Qin
Black spot disease, which is caused by the pathogenic fungalCeratocystis fimbriata, seriously affects the production of sweet potato and its quality during postharvest storage. In this study, the preliminary identification of the rhizosphere actinomycete strain SPS-33, and its antifungal activity of volatilesin vitroandin vivowas investigated. Based on morphological identification and phylogenetic analysis of the 16S rRNA gene sequence, strain SPS-33 was identified asStreptomyces lavendulae.Volatile organic compounds (VOCs) emitted by SPS-33 inhibited mycelial growth and sporulation ofC. fimbriatain vitroand also induced a series of observable hyphae morphological changes. In anin vivopathogenicity assay, exposure to SPS-33 significantly decreased the lesion diameter and water loss rate in sweet potato tuberous roots (TRs) inoculated withC. fimbriata. It increased the antioxidant enzymes’ activities of peroxidase, catalase, and superoxide dismutase as well as decreased malondialdehyde and increased total soluble sugar. In the VOC profile of SPS-33 detected by a headspace solid-phase micro extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS), heptadecane, tetradecane, and 3-methyl-1-butanol were the most abundant compounds. 2-Methyl-1-butanol, 3-methyl-1-butanol, pyridine, and phenylethyl alcohol showed strong antifungal effects againstC. fimbriata. These findings suggest that VOCs fromS. lavendulaeSPS-33 have the potential for pathogenC. fimbriatacontrol in sweet potato postharvest storage by fumigant action.Keywords:Ipomoea batatas(L.) Lam.;Streptomyces lavendulae;volatile organic compound;fumigant;antimicrobial
研究领域:
植物病理学
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微生物学
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产品关联
DOI
PubMed
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Shunshun Zhu,Hongnan Sun,Taihua Mu,Aurore Richel
Cellulose nanocrystals (CNCs) have attracted great interest because of the unique structural characteristics and physical and chemical properties, but their high cost limited the application. The purpose of this study was to achieve the pilot-scale production of cellulose and CNCs by using sweet potato residue (SPR) as the main raw material. Meanwhile, based on the process of preparing CNCs from commercial acid hydrolyzed wood, a systematic economic benefit comparison was conducted on the production of CNCs from SPR. The results showed that the degree of polymerization of the cellulose produced was 475. CNCs was produced from SPR cellulose, and the CNCs had a rod-like structure, with the diameter and length ranging from 15.10 to 30.90 nm and 80.80–259.90 nm respectively. CNCs was a type I cellulose structure with high crystallinity, and the introduction of the amine characteristic peak (1665 cm −1 ) proved the successful production of CNCs. The maximum thermal degradation temperature of CNCs was 347.88 °C, and the zeta potential was −40.07 mV, which made it suitable for use as a reinforcing material in environmental protection bio-composites. The total capital investment to produce commercial CNCs was $227.74 million, while the total capital investment for CNCs from SPR was $203.34 million. Compared with commercial CNCs, the trial production of CNCs was more financially profitable and its net present value was higher. The use of SPR had both economic and environmental benefits, reducing the use of fossil fuels. These results are helpful in guiding the high-value utilization of other agricultural by-products and the further development of CNCs composites.
研究领域:
材料科学
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环境科学
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农业科学
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产品关联
DOI
高影响因子
Insects
·
2021
·Vol. 12
·期 4
·370
·
IF 2.769
Zuo-min Shao,Jian-hao Ding,De-lei Jiang,Zhi-xiang Liu,Yi-jiangcheng Li,Jiao Wang,Jun Wang,Sheng Sheng,Fu-an Wu
Simple SummarySericulture has always been threatened byGlyphodes pyloalisWalker (G. pyloalis). Trehalase is an essential enzyme in chitin metabolism and energy supply. In this study, two trehalase genes inG. pyloalis(GpTre1andGpTre2) were identified and functionally analyzed. Knockdown of the two genes led to the significant downregulation of chitin metabolism pathway-related genes, the difficulty in molting of larvae, and the deformation of adult wings. Moreover, the trehalase inhibitor, Validamycin A, treatment increasedGpTre1andGpTre2expression and affected the expressions of chitin metabolism pathway-related genes. The inhibitor also caused a significantly increased cumulative mortality of larvae. The results suggested thatGpTre1andGpTre2played a vital role onG. pyloalisdevelopment, which could be useful for providing information for insect pest control in the future.AbstractGlyphodes pyloalisWalker (G. pyloalis) is a serious pest on mulberry. Due to the increasing pesticide resistance, the development of new and effective environmental methods to controlG. pyloalisis needed. Trehalase is an essential enzyme in trehalose hydrolysis and energy supply, and it has been considered a promising target for insect pest control. However, the specific function oftrehalaseinG. pyloalishas not been reported. In this study, two trehalase genes (GpTre1andGpTre2) were identified from our previous transcriptome database. The functions of thetrehalasein chitin metabolism were studied by injecting larvae with dsRNAs and trehalase inhibitor, Validamycin A. The open reading frames (ORFs) of GpTre1 and GpTre2 were 1,704 bp and 1,869 bp, which encoded 567 and 622 amino acid residues, respectively. Both ofGpTre1andGpTre2were mainly expressed in the head and midgut. The highest expression levels of them were in 5th instar during different development stages. Moreover, knockdown both ofGpTre1andGpTre2by the dsRNAs led to significantly decreased expression of chitin metabolism pathway-related genes, includingGpCHSA,GpCDA1,GpCDA2,GpCHT3a,GpCHT7,GpCHSB,GpCHT-h,GpCHT3b,GpPAGM,andGpUAP, and abnormal phenotypes. Furthermore, the trehalase inhibitor, Validamycin A, treatment increased the expressions ofGpTre1andGpTre2, increased content of trehalose, and decreased the levels of glycogen and glucose. Additionally, the inhibitor caused a significantly increased cumulative mortality ofG. pyloalislarvae on the 2nd (16%) to 6th (41.3%) day, and decreased the rate of cumulative pupation (72.3%) compared with the control group (95.6%). After the activities of trehalase were suppressed, the expressions of 6 integument chitin metabolism-related genes decreased significantly at 24 h and increased at 48 h. The expressions ofGpCHSBandGpCHT-h, involved in chitin metabolism pathway of peritrophic membrane in the midgut, increased at 24 h and 48 h, and there were no changes toGpCHT3bandGpPAGM. These results reveal thatGpTre1andGpTre2play an essential role in the growth ofG. pyloalisby affecting chitin metabolism, and this provides useful information for insect pest control in the future.Keywords:Glyphodes pyloalisWalker;trehalase;chitin metabolism;Validamycin A;RNA interference;pest control
研究领域:
昆虫学
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分子生物学
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害虫防治
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Hao Huang,Qin Xu,Tarun Belwal,Li Li,Halah Aalim,Qiong Wu,Zhenhua Duan,Xuebing Zhang,Zisheng Luo
Purple sweet potatoes are known for its vibrant purple color due to high level of anthocyanins. A polyethylene glycol based ultrasonic-assisted green extraction (PEG-UAE) of anthocyanins from purple sweet potato was proposed. Different types of PEG were tested for anthocyanin extraction along with PEG concentration, liquid-to-solid ratio, ultrasonic temperature and time were investigated for its impact on viscosity and extraction efficiency. The optimum extraction condition, 42 mL/g of ratio, 83% of PEG 200 concentration, 64 °C of ultrasonic temperature and 80 min of sonication time, resulted in better extraction of anthocyanins (83.78 mg CE/100 g DW) and phenolics (994.88 mg GAE/100 g DW). Using UPLC-Triple-TOF/MS, ten anthocyanin and six non-anthocyanin compounds were identified and characterized, with the highest peak area for cyanidin-3-caffeoyl-p-hydroxybenzoyl sophoroside-5-glucoside (25.9%). Moreover, the anthocyanins and phenolics extraction yield along with antioxidant activity were negatively correlated with PEG viscosity, on which ultrasonication has profound effects.
研究领域:
食品科学
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植物化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Menglei Yan,Weifei Wang,Qingqing Xu,Qian Zou,Wen Chen,Dongming Lan,Yonghua Wang
The existing oil oxidation detection methods are unsuitable for consumers to identify oil oxidation in a domestic setting. This study aims to develop indicator films detecting the degree of lipid oxidation with the naked eye. Purple sweet potato pigment (PSP) was chosen as a color indicator due to its response to hydrogen peroxide. The novel oxidation indicator films were prepared using corn starch, carboxymethyl cellulose (CMC), and varying concentrations of PSP. Fourier transform infrared spectroscopy spectra and scanning electron microscopy analysis confirmed the successful dispersion of PSP in the films. Thermal stability , light resistance, ultraviolet light resistance, mechanical resistance, and flexibility of films containing PSP were improved, enhancing the potential application in detecting oxidized substances. All the films exhibited noticeable color changes when exposed to different concentrations of hydrogen peroxide. These differences were more pronounced with higher levels of PSP. When these films were used to determine the degree of lipid oxidation, the ∆E value of the CS-PSP-0.25 % film showed a linear relationship (R 2 = 0.929) with the peroxide value, unlike other films. Therefore, it is reliable to infer the peroxide value of edible oil by observing the color of the films, which helps customers avoid consuming expired oils.
研究领域:
食品科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2022
·Vol. 58
·期 2
·535-542
·
IF 3.612
Xiunan Zhang,Yajuan Jia,Yangyang Sun,Guanglei Li
Summary In this paper, the effects of fatty acid-blending heat-moisture treatment (FA-HMT) on the physicochemical and in vitro digestion properties of sweet potato flour (SPF) were studied based on the study on the physical modification of SPF by HMT. The results showed that the addition of linoleic acid (LOA)/Palmitic acid (PA) damaged the double helix structure of SPF, and reduced the long-range order, relative crystallinity, anti-aging, anti-shearing properties and slow digestible starch (SDS) content of SPF. However, the FA-HMT promoted the increase of RS5 (starch-lipid complex) content in SPF, which had a certain positive effect on improving the intestinal environment. The results showed that when the addition ratio of LOA was 2%, the SDS content of SPF decreased slightly, and the SPF had better anti-aging, anti-shearing properties and higher RS5 content.
研究领域:
食品科学
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营养学
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产品关联
DOI
高影响因子
JOURNAL OF DAIRY SCIENCE
·
2025
·
IF 4.4
Zhenlin Zhang,Yixuan Zhu,Weiwei Cheng,Meihua Hu,Xin Yao,Zhichao Yin,Dong Liu
This study explored the regulatory effects of sweet potato pericarp polyphenols on protein oxidation in commercially available fresh milk. Fresh milk samples from brands such as Yili, Mengniu, and Bright Dairy were collected and supplemented with sweet potato pericarp polyphenols. The samples were then stored at 4°C, and analyses were conducted to evaluate the antioxidant indices, protein oxidation products, microbial count, and texture parameters. The free radical scavenging capacities measured by 1,1-diphenyl-2-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt assays, as well as the decline in the total antioxidant capacity, were significantly lower in the treatment group compared with the control group. In addition, the treatment group showed lower carbonyl content, reduced oxidative loss of free sulfhydryl groups, inhibited excessive formation of disulfide bonds, a slower increase in thiobarbituric acid reactive substances values, suppressed protein hydrolysis, improved microbial safety, and enhanced textural stability. Therefore, sweet potato pericarp polyphenol can effectively inhibit protein oxidation in fresh milk, preserve protein structural stability, and enhance antioxidant and textural quality. These findings provide a theoretical basis for their potential application in fresh milk preservatives.
研究领域:
食品科学
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生物化学
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乳品技术
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抗氧化研究
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Min Gou,Hao Wu,Ahmed S.M. Saleh,Luzhen Jing,Yu Liu,Kun Zhao,Chunyan Su,Bo Zhang,Hao Jiang,Wenhao Li
The influence of repeated and continuous dry heat treatments on structural, physicochemical, and digestive properties of sweet potato starch was investigated. The results showed that the original A-type crystallinity of sweet potato starch remained unchanged after dry heat treatments. The light transmittance, gelatinization temperature, and pasting temperature of sweet potato starch increased; while the pasting viscosities, swelling power, and solubility decreased after dry heat treatments. Relative crystallinity, solubility, swelling power, light transmittance, and thermal parameter values (T o , T p , T c , ΔT) were found to be significantly higher for the continuous dry heat (CDH) treated starch than those of the repeated dry heat (RDH) treated starch after treatment for the same duration. However, CDH treated starch samples showed lower paste viscosity and digestibility than those of RDH treated samples after treatment for the same duration. In addition, the CDH treatment highly influenced the structure of starch granule surface compared with the RDH treatment. Generally, it can be concluded that RDH treatment highly influenced structural, physicochemical, and digestive properties of sweet potato starch compared with CDH treatment.
研究领域:
食品科学
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淀粉化学
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物理化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2025
·
IF 3.5
Lanlan Hu,Zhen Wang,Longfei Feng,Yangyang Jia,Yuanyang Nie,Ibrahim Khalifa,Hao Zhang,Xinhong Liang,Benguo Liu
BACKGROUND Diabetes mellitus presents a significant global health burden, highlighting the need for safe and cost-effective dietary interventions. Soluble dietary fiber (SDF) derived from sweet potato, rich in bioactive compounds, holds promise for improving glucose metabolism and gut microbiota, yet its effects on type 2 diabetes (T2D) remain underexplored. RESULTS The present study investigated the impact of different doses of sweet potato-derived SDF-high (SDF-H, 1000 mg kg −1 body weight), SDF-medium (SDF-M, 600 mg kg −1 body weight) and SDF-low (SDF-L, 200 mg kg −1 body weight) on T2D mice over 10 weeks. The results demonstrated that SDF supplementation significantly improved body weight, reduced excessive water intake and lowered postprandial blood glucose. Notably, high- and medium-dose SDF improved glucose tolerance, reducing postprandial blood glucose by 23.76% and 17.10%, respectively, and mitigated diabetes-induced damage to the liver, kidneys and pancreas. SDF also modulated lipid metabolism, decreasing serum total cholesterol and triglycerides at the same time as increasing high-density lipoprotein cholesterol. Importantly, SDF, particularly at high doses, enhanced gut microbiota diversity and abundance, suppressing harmful bacteria and promoting beneficial genera such as Alloprevotella and Lactobacillus , at the same time as decreasing the abundance of Helicobacter . These findings suggest that sweet potato-derived SDF exerts multi-targeted benefits in T2D through metabolic regulation and gut microbiota modulation. CONCLUSION Sweet potato-derived SDF is a promising natural agent for improving glycemic control, lipid profiles, and gut microbial balance in T2D, suggesting its potential as a dietary intervention for diabetes management, pending further validation in human studies. © 2025 Society of Chemical Industry.
研究领域:
营养学
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糖尿病研究
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微生物学
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食品科学
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药理学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 18
·5985
·
IF 4.927
Yuqin Zhang,Shiquan Bian,Jing Hu,Gang Liu,Shouhua Peng,Hongjiang Chen,Zhenying Jiang,Tongyong Wang,Quan Ye,Haibo Zhu
Natural deep eutectic solvents (NADESs) coupled with microwave-assisted extraction (MAE) were applied to extract total flavonoid compounds from spent sweet potato (Ipomoea batatasL.) leaves. In this study, ten different NADESs were successfully synthesized for the MAE. Based on single-factor experiments, the response surface methodology (RSM) was applied, and the microwave power, extraction temperature, extraction time, and solid–liquid ratio were further evaluated in order to optimize the yields of total flavonoid compounds. Besides, the extracts were recovered by macroporous resin for the biological activity detection of flavonoid compounds. As a result, NADES-2, synthesized by choline chloride and malic acid (molar ratio 1:2), exhibited the highest extraction yield. After that, the NADES-2-based MAE process was optimized and the optimal conditions were as follows: microwave power of 470 W, extraction temperature of 54 °C, extraction time of 21 min, and solid–liquid ratio of 70 mg/mL. The extraction yield (40.21 ± 0.23 mg rutin equivalents/g sweet potato leaves) of the model validation experiment was demonstrated to be in accordance with the predicted value (40.49 mg rutin equivalents/g sweet potato leaves). In addition, flavonoid compounds were efficiently recovered from NADES-extracts with a high recovery yield (>85%) using AB-8 macroporous resin. The bioactivity experiments in vitro confirmed that total flavonoid compounds had good DPPH and O2−· radical-scavenging activity, as well as inhibitory effects onE. coli,S. aureus,E. carotovora, andB. subtilis. In conclusion, this study provides a green and efficient method to extract flavonoid compounds from spent sweet potato leaves, providing technical support for the development and utilization of sweet potato leaves’ waste.Keywords:natural deep eutectic solvents;response surface;spent sweet potato leaves;antioxidant activity
研究领域:
化学工程
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药学
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食品科学
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生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）