CARBOHYDRATE POLYMERS
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2016
·
IF 4.219
Lishan Xu,Yaojie Zhang,Lizhi Wang
Dragon fruit is a tropical fruit with good taste. It can bring health benefits to human body. As one of the major bioactive components in this fruit, the polysaccharides might contribute to the health benefits. However, the precise structure information remains unknown. A leading polysaccharide of dragon fruit pulp, DFPP, was purified and identified by NMR and GC–MS. →4-β- d -Glc p A-1→, →6-β- d -Gal p -1→ and →4-α- l -Rha p -1→ constituted the backbone and α- l -Ara f -1 → 5-α- l -Ara f -1→ formed the branch chain. The precise structure was putatively identified as below. The molecular weight was 2.2 × 10 3 kDa. The structure information of polysaccharides will be helpful to understand this fruit. Download : Download high-res image (88KB) Download : Download full-size image
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
Agriculture-Basel
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2019
·Vol. 9
·期 12
·250
·
IF 0
Hua Huang,Yueming Jiang
This study comprehensively analysed the chemical composition of the cuticle in pitaya fruits. The total coverage amount of the waxes versus cutin monomers accumulated at a ratio of 0.6, corresponding to masses per unit of 30.3 μg·cm−2and 50.8 μg·cm−2, respectively. The predominant wax mixtures weren-alkanes in homologous series of C20–C35, dominated by C31and C33; as well as triterpenoids with an abundant amount of uvaol, lupenon, β-amyrinon, and β-amyrin. The most prominent cutin compounds were C16- and C18-type monomers, in which 9(10),16-diOH-hexadecanoic acid and 9,10-epoxy-ω-OH-octadecanoic acid predominated, respectively. The average chain length (ACL) of aliphates in pitaya fruit cuticle (30.5) was similar to that estimated in leaf waxes, and higher than that in most of the fruit and petal waxes that have been reported. We propose that the relatively high ACL and wax/cutin ratio might enhance the cuticular barrier properties in pitaya fruit cuticle to withstand drought.Keywords:pitaya fruit;cuticle;wax;cutin;ACL
研究领域:
植物科学
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农业化学
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产品关联
DOI
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Edidiong Joseph Bassey,Jun-Hu Cheng,Da-Wen Sun
This study investigated the effectiveness of novel and innovative pretreatments (NIP) using thermoultrasound and microwave-mediated freeze-thaw (TSFT, MWFT) for improving the mid-infrared drying of dragon fruit, as compared with recent pretreatment methods using cold plasma (CP), ultrasound (US), edible coating (EC), microwave and infrared blanching (MWB, IRB). Except for EC, all selected pretreatment methods induced ultrastructural changes, resulting in accelerated moisture removal and reduced drying time. In addition, all the pretreatments also induced modifications in colour, structure, and texture, with NIP demonstrating superior outcomes for colour, rehydration, shrinkage, and hardness properties. Blanching pretreatments (MWB and IRB) improved phytochemical and antioxidant properties, including total phenolics, betacyanin, betaxanthin, CUPRAC, hydroxyl radical scavenging, and ABTS, except for ascorbic acid, which was better preserved by TSFT. The study underscores the time-saving and quality enhancement advantage of NIP, over other recent methods for improving mid-infrared drying.
研究领域:
食品科学
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生物工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xiaoming Chen,Shun Liu,Mo Shen,Zhipeng Song,Sudu Bilige,Jingkang Li,Yueti Li,Chungang Wu,Liangliang Sun,Jishun Shi,Zihao Chen,Yong Zhao
Doxorubicin (DOX) has been extensively used in cancer chemotherapy as an antibiotic drug, but when DOX concentration exceeds the threshold value, irreversible liver toxicity and cardiotoxicity can be triggered. Therefore, it is a significant theme to detect DOX concentration of patient blood and metabolites for the optimization of drug dosage. Linear correlation between fluorescence quenching of silicon nanoparticles (SiNPs) and DOX concentration enables SiNPs to present good prospect to address this tricky issue. Inspired by these aspects, we put forward a novel method to synthesize dragonfruit-based SiNPs (DSiNPs) at room temperature, and leverage them in the fiber-optic sensing of urine DOX. Firstly, we investigate a simple and green synthesis method of DSiNPs emitting blue-green fluorescence through a one-step redox reaction at room temperature with organosilane as silicon source and fresh dragonfruit juice as reducing agent. Secondly, depending on optical characterization, we demonstrate mechanism of DSiNPs in the detection of DOX. Thirdly, a fiber-optic sensor is used to measure the fluorescence intensity of DSiNPs under diverse salt concentrations, pH values, and illumination time to explore the tolerance of DSiNPs. Fourthly, based on optimization of parameters and validation of specificity, we acquire linear response range of this method to DOX from 0 to 50 μM with detection limit of 3 μM. Finally, this method is leveraged in the detection of urine DOX, and obtained the recovery rates of 92.30 % and 107.30 %. This method holds excellent potential in the clinical analysis of anti-tumor drugs for the advantages of environmental friendliness and simple operation.
研究领域:
生物医学工程
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药物分析
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纳米材料科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
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IF 8.8
Yiyan Liu,Hongru Chen,Shufan Chen,Yuehan Zhang,Jingkai Zhang,Xiaoqi Zhu,Wenxuan Li,Jialu Liu,Yang Jiang,Dapeng Li
Pectin extraction is generally an energy-intensive industrial process, while on the other hand their extraction methods vary from different sources. Starting with that perspective, pectin (WSP) containing ultra-low degree of methylation (31.08 ± 1.27%) from dragon fruit peel (DFP) was extracted by using pure water at room temperature. WSP, dominant in DFP (17.13 ± 1.01%), showed both a high molecular weight and a wide molecular weight distribution, while the yield of the rest acid-soluble pectin (HAP) from DFP residue was only 5.22 ± 0.76%. Furthermore, WSP can stabilize emulsions over a wide range of concentrations and oil phases, especially HIPE. Therefore, the hypothesis was verified that the pectin-rich extract from dragon fruit peel with excellent emulsifying properties could be simply extracted by pure water. This environmentally-friendly and energy-saving extraction method provides a new insight to increase the additional value of dragon fruit peel produced in food processing.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Chenguang Wang,Chengyan Wen,Zheng Liang,Zhipeng Tian,Qian Jiang,Yuhe Liao,Xunzhu Jiang,Lungang Chen,Qiying Liu,Longlong Ma,Michiel Dusselier
Direct conversion of syngas to aromatics has great potential to decrease fossil fuel dependence. Here, a unique structured hybrid catalyst composed of Fe 3 O 4 nanoparticles intimately dispersed inside an acidic zeolite is developed. 1 to 4 nm sized Fe 3 O 4 nanoparticles end up evenly dispersed in an acidic and slightly mesoporous Al-ZSM-5 based on Fe 3 O 4 restructuring during co-hydrothermal synthesis using organosilane modification. A very high aromatic productivity of 214 mmol aromatics h −1 g Fe −1 can be obtained with a remarkable 62% aromatic selectivity in hydrocarbons. This catalyst has excellent sintering resistance ability and maintains stable aromatics production over 570 h. The synthetic insights that postulate a mechanism for the metastable oxide-zeolite reorganization during hydrothermal synthesis could serve as a generic route to sinter-resistant oxide-zeolite composite materials with uniform, well-dispersed oxide nanoparticles in close intimacy with - and partially confined in - a zeolite matrix.
研究领域:
催化化学
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材料科学
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能源化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Chang Liu,Ning Li,Xinyu An,Xu Li,Zhiming Liu
The novel incorporation of dragon fruit peel extract (DE), rich in anthocyanins, Zn 2+ (from Zinc Alginate) and pectin was applied to create active and intelligent food packaging composite films. These films were characterized for their microstructure and properties. Various levels of anthocyanin extracts (1 %, 3 %, and 5 %) were evaluated for their impact on the films' physical and functional properties, incorporating microstructure, mechanical strength, barrier properties, pH sensitivity, and bacteriostatic effectiveness. The films exhibited a significant antibacterial rate of up to 99.99 % against common foodborne pathogens, enhanced flame retardancy with an enhancement of 32.7 %, and a broad pH sensitivity range, indicating their adaptability to various conditions. The results demonstrated that the prepared indicator film achieved a 50 % reduction in water vapor permeability. Additionally, the mechanical properties were enhanced, with only a slight decrease of 12.2 % in tensile strength and 14.0 % in elongation at break. In tests monitoring shrimp freshness, pectin/ZA/DE films showed notable color changes correlating with shrimp quality. These specific values highlight the pectin/ZA/DE films' potential for real-world applications, suggesting that they have potential applications as smart packaging materials in the food industry.
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
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Rong Dai,Ziliang Zheng,Wenjun Yan,Chenshuai Lian,Xu Wu,Xia An,Xianmei Xie
The critical problem facing catalysts for the LT-ESR is deactivation owing to sintering of the active metal and carbon deposition. To solve this problem, a dragon fruit-like Pt-Cu@mSiO 2 catalyst for LT-ESR reaction has been successfully fabricated by a facile encapsulation strategy. Structural and morphological analysis shows that the Pt-Cu@mSiO 2 nanocomposite (approximately 400 nm) has a uniform dragon fruit-like structure, with well crystallized Pt-Cu alloy nanoparticles (about 50 nm) embedded in the mSiO 2 . Benefiting from the unique components and architectural features, the dragon fruit-like Pt-Cu@mSiO 2 nanocomposite with optimal Pt/Cu ratio present superior performance than that of Pt@mSiO 2 , Cu@mSiO 2 and supported Pt-Cu/mSiO 2 catalysts in terms of activity, H 2 selectivity, and stability in the LT-ESR reaction. Moreover, the synergistic effect of platinum and copper can substantially decrease the CO concentration. It is crucial that the mesoporous SiO 2 shell not only make the embedded Pt-Cu alloy nanoparticles easily accessible but also effectively prevent leaching and aggregation of active sites as well as spatially suppress the carbon deposition on the active surface, thus maintain a good catalytic activity during the 150 h stability test at 400 °C.
研究领域:
催化材料
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化学工程
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纳米技术
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2022
·
IF 10.723
Meng-yuan Zhang,Jun Cai
Red dragon fruit peel is a pectin-rich fruit waste that is a potential source of prebiotics and whose different sources and structures will influence its prebiotic function. Thus, we compared the effects of three extraction methods on the structure and prebiotic function of red dragon fruit pectin, the results showed that the citric acid extracted pectin produced a high Rhamnogalacturonan-I (RG-I) region (66.59 mol%) and more side-chains of Rhamnogalacturonan-I ((Ara + Gal)/Rha = 1.25), which can promote bacterial proliferation significantly. The side-chains of Rhamnogalacturonan-I may be an important factor in that pectin can promote the proliferation of B. animalis. Our results provide a theoretical basis for the prebiotic application of red dragon fruit peel.
研究领域:
食品科学
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微生物学
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营养学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Shaolong Wang,Hao Liu,Dingding Ye,Qiao Lan,Xun Zhu,Yang Yang,Rong Chen,Qiang Liao
Both sustainable storage of renewable energy using H 2 O 2 as energy carrier and wastewater treatment by electro-Fenton are highly dependent on the efficiency of H 2 O 2 electrosynthesis via 2-electron reduction of O 2 . Rational design of high-performance and cost-effective electrocatalysts with facile preparation is bear the brunt of scalable H 2 O 2 electrosynthesis. Herein, for the first time, we synthesize a pitaya peel-derived formicary-like electrocatalyst employing facile pyrolysis and KOH activation. At the optimal mass ratio of biochar to KOH (1:3), the electrocatalyst exhibits prominent H 2 O 2 activity and selectivity owing to its rich self-doped oxygen-containing functional groups as well as structural defects and sp 3 -C bonds serving as reactive sites, rational hierarchical pores boosting mass transfer of reactants and products, and ultrahigh specific surface area facilitating the exposure of reactive sites. Under natural air diffusion, the pitaya peel-derived catalyst-coated cathode achieves surprising H 2 O 2 productivity of 41.6 mg h −1 cm −2 with current efficiency of 65.5% at large current density of 100 mA cm −2 , meeting the near-industrial requirements for sustainable H 2 O 2 production. Long-term operation stability at large current and rapid degradation of multiple high-concentration organic pollutants demonstrate tremendous potential of the pitaya peel-derived catalysts for H 2 O 2 -based renewable energy storage and environmental remediation.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 15
·2708
·
IF 5.1
Guanghui Li,Kit-Leong Cheong,Yunhua He,Ahluk Liew,Jiaxuan Huang,Chen Huang,Saiyi Zhong,Malairaj Sathuvan
AlthoughHylocereus polyrhizuspulp residues polysaccharides (HPPP) have shown potential in improving metabolic disorders and intestinal barrier function, the mechanism by which they exert their effects through regulating O-glycosylation modifications in the mucus layer remains unclear. Therefore, this study established a HFD-induced obese colitis mouse model (n= 5 per group) and combined nano-capillary liquid chromatography-tandem mass spectrometry (nanoLC-MS/MS) technology to quantitatively analyze the dynamic changes in O-glycosylation. Additionally, through quantitative O-glycosylation proteomics and whole-proteome analysis, we identified 155 specifically altered O-glycosylation sites in colon tissue, with the glycosylation modification level of the MUC2 core protein increased by approximately 2.1-fold. The results indicate that HPPP alleviates colonic mucosal damage by regulating interactions between mucus O-glycosylation. Overall, we demonstrated that HPPP increases HFD-induced O-glycosylation sites, improves intestinal mucosal structure in obese mice, and provides protective effects against obesity-induced intestinal mucosal damage.
研究领域:
营养科学
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生物化学
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分子生物学
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食品科学
·
胃肠病学
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产品关联
DOI
PubMed
高影响因子
POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2024
·
IF 6.4
Hua Huang,Xuemei He,Qingming Sun,Guoming Liu,Yayuan Tang,Jian Sun
Pitaya ( Hylocereus undatus ) fruit is susceptible to pathogens that induce fruit decay after harvest. Cuticular waxes covering the outermost plant surfaces are the first site of plant-environment interactions; however, their changes in response to fruit decay are under-researched. Herein, the surface microstructures and chemical composition of wax on pitayas, as well as their changes in response to fruit decay, were comparatively studied. The varieties ‘Baishuijing’ (BSJ) and ‘Hongshuijing’ (HSJ) were examined after harvest. The fruit appearance, morphology, and wax composition differed between cultivars. The surface of both pitaya cultivars was smooth, although traces of granules and a thicker lipid layer were observed using histochemical staining in HSJ than in BSJ, as well as a higher cuticular wax content. Fruit decay rate increased rapidly in both cultivars under room storage conditions, and greater sensitivity to pathogens was found in BSJ than HSJ. As well as the occurrence of fruit decay, the total wax coverage, very-long-chain primary alcohols, aldehydes, fatty acids, and triterpenoids decreased in BSJ, while remaining relatively stable in HSJ. Correspondingly, the relative gene expression levels of HuKCS11 (−1, 2, and 3) , HuKCS17 , and HuKCS19 (for the elongation of very-long-chain fatty acids), HuCER1 (for aldehydes or n -alkanes), HuFAR (−1 and 2) (for primary alcohols), HuBAS1 (−1, 3, and 4) (for β-amyrin), and HuLUS1 (for lupeol) were considerably modified following fruit senescence during storage. The difference in surface topography and wax accumulation between cultivars might have affected pathogen susceptibility after harvest. These results may help when choosing varieties of pitaya based on surface characteristics and cuticular chemicals. They may also help to optimize strategies for postharvest preservation and storage.
研究领域:
植物科学
·
农学
·
采后生理学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）