Food Bioscience
·
2025
·
IF 5.9
Jinyu Wu,Xinru Wang,Rundong Jiang,Genlin Zhang,Yanyan Dang
This study investigated the effects of shade drying (SD), hot air drying (HD), vacuum drying (VD), and vacuum freeze-drying (VFD) on the drying characteristics, bioactive compound content, and biological activities of pomegranate peel. Additionally, preliminary research was conducted on the antimicrobial mechanisms of pomegranate peel polyphenols. The results demonstrated that VFD achieved the shortest drying time while maintaining superior appearance quality and the highest levels of bioactive compounds: total phenolic content (TPC, 86.78 mg/g), total flavonoid content (TFC, 19.37 mg/g), total tannin content (TTC, 7.6 mg/g), total anthocyanin content (TAC, 0.07 mg/g), and ABTS antioxidant capacity (383.10 mg TE/g). The VFD treatment also showed superior •OH radical scavenging activity (122.50 mg TE/g) and α-ALA inhibition (5.18 mg/mL), as well as maximum inhibition zones against S. aureus (21.33 ± 0.04 mm), B. subtilis (16.23 ± 0.04 mm), and A. tenuissima (83.89%). The HD demonstrated slightly lower but comparable quality parameters to VFD. 22 major phenolic compounds were identified in the VFD. Molecular docking studies revealed four compounds, including punicalagin, punicalin, rutin, and ellagic acid 4-O-xylopyranoside, that effectively bound to fungal cell wall functional proteins. Among these, punicalagin exhibited primary interactions through hydrogen bonding and hydrophobic interactions with the target proteins.
研究领域:
食品科学
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植物化学
·
微生物学
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产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Xia Zhang,Huixian Zhang,Dongcai Wang,Yuanqing Zhang
Fermentation technology presents promising opportunities for food waste valorization. Pomegranate peel ( PP ), a food by-product, has potential applications in fermented feed. This study examined the effects of a 6% dry PP additive on the ensiling characteristics, antioxidant activity, metabolites, bacterial community, and in vitro ruminal fermentation, methane (CH 4 ) emission of corn silage ensiled for 7 days and 60 days using microbiome and metabolome analyses. PP-treated silage inhibited ( P < 0.05) protein degradation by reducing ammonia nitrogen and non-protein nitrogen concentrations during ensiling. The PP additive increased ( P < 0.05) water-soluble carbohydrate content and reduced ethanol production in corn silage. Lactiplantibacillus dominated PP-treated silage at the initial ensiling stage, while Levilactobacillus prevailed at the final stage . Notably, the PP additive exhibited strong antioxidant activity by modulating antioxidant enzymes and flavonoid biosynthesis mediated by key metabolites (epigallocatechin and catechin). Correlation analysis identified Lactiplantibacillus , Citrobacter , Phytobacter and Burkholderia as key microbes in the production of antioxidant metabolites and enzymes in PP-treated silage. Additionally, PP supplementation reduced ( P < 0.05) in vitro ruminal CH 4 and nitrogen losses, while decreasing dry matter (DM) digestibility in corn silage. In summary, PP-treated corn silage enhanced antioxidant properties and reduced the nitrogen losses and in vitro ruminal CH 4 emissions, but lowered DM digestibility. Thus, PP can be recommended as a silage additive, though the dry PP level should be lower than that used in this study.
研究领域:
微生物学
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代谢组学
·
动物营养学
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DOI
PubMed
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
·
2012
·Vol. 37
·期 5
·694-700
·
IF 0.553
BENGUO LIU,WEI LI,LIZHI HU,JIAN ZHAO
Pomegranate peel is the main byproduct of pomegranate juice manufacture and is rich in phenolic acids, but most of which exist in the bound form with low bioavailability. A simple, low-cost procedure for releasing phenolic acids from pomegranate peel was developed, which uses a mild alkaline treatment of the peel at room temperature. Results showed that when the peel was treated with 0.5 mM NaOH for 3 h, the concentration of ellagic acid, one of the two main phenolic acids present, almost doubled, while gallic acid, the other main phenolic, which was not found in the free form, was released at a concentration almost twice as high as that of ellagic acid. With the release of the two phenolic acids, the extract of the pomegranate peel showed remarkable increases in their antioxidant activity measured by three different essays. However, more severe alkaline treatment either by extending the hydrolysis time to 6 h or longer, or by using a higher concentration of NaOH (2 mM), resulted in decreases in the phenolic acids, possibly as a result of alkaline-induced degradation, with corresponding decreases in antioxidant activities. These results showed that the mild alkaline treatment process could be a low cost but efficient method that can be used to increase the level of phenolic acids and hence the potential value of pomegranate peel extract. PRACTICAL APPLICATIONS Pomegranate peel is the main byproduct of pomegranate juice manufacture and is rich in phenolic acids, but most of which exist in the bound form with low bioavailability. A simple, low-cost procedure for releasing phenolic acids from pomegranate peel was introduced in this article, which uses a mild alkaline treatment of the peel at room temperature. The method was practical and the extract could be used as antioxidant and active supplement.
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
高影响因子
Membranes
·
2022
·Vol. 12
·期 11
·1108
·
IF 4.562
Lu Dai,Runli Li,Yanmin Liang,Yingsha Liu,Wentao Zhang,Shuo Shi
The multifunctional packaging used for fresh food, such as antioxidant and antimicrobial packaging, can reduce food waste. In this work, a polylactic acid (PLA)-based composite film with antioxidant and antibacterial properties was prepared by using nano-zinc oxide (ZnONPs) and pomegranate peel extract (PEE) via the solvent-casting method. Different amounts of PEE (0.5, 1, 1.5 and 2 wt%) and 3 wt% ZnONPs were added to PLA to produce the active films. The results of various characterizations (SEM, XRD, etc.) showed that ZnONPs and PEE were uniformly dispersed in PLA film. Compared to PLA films, the PLA/ZnONPs/PEE films showed an increased UV barrier, water vapor permeability and elongation at break, and decreased transparency and tensile strength. In addition, the antioxidant activity of the composite film was evaluated based on DPPH and ABTS. The maximum DPPH and ABTS scavenging activities of PLA/ZnONPs/PEE were 96.2 ± 0.8% and 93.1 ± 0.5%. After 24 h, PLA/ZnONPs/PEE composite film inhibited 1.4 ± 0.05 Log CFU/mL ofS. aureusand 8.2 ± 0.35 Log CFU/mL ofE. coli, compared with the blank group. The results showed that PLA/ZnONPs/PEE composite film had good antibacterial and antioxidant activities. Therefore, the composite film showed great potential for food packaging.Keywords:polylactic acid;ZnONPs;pomegranate peel extract;packaging
研究领域:
材料科学
·
食品科学
·
纳米技术
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DOI
PubMed
高影响因子
IONICS
·
2016
·Vol. 23
·期 4
·985-996
·
IF 2.119
Sun Kanjun,Li Jindan,Peng Hui,Feng Enke,Ma Guofu,Lei Ziqiang
Nitrogen-doped porous activated carbons (N-PHACs) have been successfully synthesized using pomegranate husk as carbon precursor via ZnCl 2 -activation carbonization and subsequent urea-assisted hydrothermal nitrogen-doping method. The obtained N-PHACs possesses abundant mesoporous structure, high specific surface area (up to 1754.8 m 2 g −1 ), pore volume (1.05 cm 3 g −1 ), and nitrogen-doping content (4.51 wt%). Besides, the N-PHACs-based material showed a high specific capacitance of 254 F g −1 at a current density of 0.5 A g −1 and excellent rate performance (73% capacitance retention ratio even at 20 A g −1 ) in 2 M KOH aqueous electrolyte, which is attributed to the contribution of double-layer capacitance and pseudocapacitance. The assembled N-PHACs-based symmetric capacitor with a wide operating voltage range of 0–1.8 V exhibits a maximum energy density of 15.3 Wh kg −1 at a power density of 225 W kg −1 and superior cycle stability (only 6% loss after 5000 cycles) in 0.5 M Na 2 SO 4 aqueous electrolyte. These exciting results suggest that the novel N-doping porous carbon material prepared by a green and low-cost design strategy has a potential application as high-performance electrode materials for supercapacitors.
研究领域:
材料科学
·
电化学
·
纳米能源
·
储能材料
·
碳材料
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Gaowei Guo,Turghun Muhammad,Almire Dolkun,Junxia Gao
Effective evaluation of the fixed-bed adsorption kinetics of plant total flavonoids is important for the design of adsorption separation of bioactive compounds. In this paper, a new merging-zone flow-injection analysis (FIA) method using Al(III) as the colorimetric agent was developed for automatic determination of total flavonoid concentration in the effluent of fixed-bed adsorption, to address the poor reproducibility of the conventional method. This method has a high sample throughput of 58 h −1 , reflecting adsorption change in each minute. The fixed-bed experimental parameters were optimized using a univariate experimental design based on the FIA method. The optimum condition for the adsorption of pomegranate peel total flavonoids were determined to be 0.5 g polyamide resin with size of 74–149 μm as adsorbent, with the initial concentration of 627.11 mg/L, the flow rate of 2.0 mL/min. Under the condition, breakthrough curves were precisely established for the adsorption of pomegranate peel total flavonoids, and the breakthrough time and adsorption capacity were determined to be 20.45 min and 60.17 mg/g, respectively. It’s found that Yoon-Nelson, Thomas and Bohart-Adams kinetic models were all able to fit the breakthrough curves well. The 80 % methanol aqueous solution was selected as the desorption solvent, and the optimal desorption flow rate was 2.5 mL/min. The FIA method can monitor the whole process of fixed-bed adsorption online and is suitable for different fixed-bed adsorption systems. The results obtained with the automatic flow method showed good agreement with the conventional method. The FIA method holds significant promise for studying and monitoring adsorption processes, due to its automatic on-line nature, high precision, low consumption of reagent and sample, and the ability to generate large quantities of highly accurate adsorption data.
研究领域:
生物化学
·
分离科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 33
·80817-80827
·
IF 5.8
Huang Guofu,Wang Mianmian,Sun Xinying,Liu Haijian,Liu Fangfang
In this work, pomegranate peel extracts were used as the green reducing agent to synthesize Cu/Fe nanoparticles (P-Cu/Fe nanoparticles) and removed tetrabromobisphenol A (TBBPA) in aqueous solution. P-Cu/Fe nanoparticles were amorphous and irregularly spherical. The surfaces of nanoparticles contained Fe 0 , Fe 3+ oxides (hydroxides), and Cu 0 . The bioactive molecules from pomegranate peel were extremely important for the synthesis of nanoparticles. P-Cu/Fe nanoparticles had excellent removal performance for TBBPA, and 98.6% of TBBPA (5 mg L −1 ) was removed within 60 min. The removal reaction of TBBPA by P-Cu/Fe nanoparticles was well-fitted with the pseudo-first-order kinetic model. The Cu loading was critical for TBBPA removal with an optimum value of 1.0 wt%. A weakly acidic condition (pH 5) was more favorable for the removal of TBBPA. The removal efficiency of TBBPA increased with the rise of temperature and decreased with increasing initial TBBPA concentration. The activation energy ( E a ) was 54.09 kJ mol −1 , indicating that the removal of TBBPA by P-Cu/Fe nanoparticles was mainly surface-controlled. Reductive degradation was the main mechanism of TBBPA removal by P-Cu/Fe nanoparticles. In conclusion, green synthesized P-Cu/Fe nanoparticles using pomegranate peel waste show great potential for the remediation of TBBPA in aqueous solution.
研究领域:
环境科学
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材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2016
·Vol. 39
·期 10
·1963-1970
·
IF 2.741
Guang-Ying Sun,Chao Wang,Yu-Qin Luo,Yong-Xin Zhao,Jian Yang,Zhao-Sheng Liu,Haji Akber Aisa
The combination of molecular crowding and virtual imprinting was employed to develop a cost-effective method to prepare molecularly imprinted polymers. By using linear polymer polystyrene as a macromolecular crowding agent, an imprinted polymer recognizable to punicalagin had been successfully synthesized with punicalin as the dummy template. The resulting punicalin-imprinted polymer presented a remarkable selectivity to punicalagin with an imprinting factor of 3.17 even at extremely low consumption of the template (template/monomer ratio of 1:782). In contrast, the imprinted polymer synthesized without crowding agent, did not show any imprinting effect at so low template amount. The imprinted polymers made by combination of molecular crowding and virtual imprinting can be utilized for the fast separation of punicalagin from pomegranate husk extract after optimizing the protocol of solid-phase extraction with the recovery of 85.3 ± 1.2%.
研究领域:
分析化学
·
天然产物分离纯化
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2015
·Vol. 407
·期 25
·7681-7690
·
IF 3.436
Hao Yi,Gao Ruixia,Liu Dechun,Tang Yuhai,Guo Zengjun
A novel surface imprinting polymer based on magnetic carbon nanotubes was prepared using dendritic polyethyleneimine as functional monomer to amplify the number of imprinted cavities. The characteristics of resulting polymers were evaluated by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and vibrating sample magnetometer (VSM). Results suggest that magnetic nanoparticles are deposited onto the surface of multiwalled carbon nanotubes and the imprinted shell is coated on the surface of magnetic carbon nanotubes with a thickness of approximately 8 nm. Magnetic imprinted polymers are sensitive to magnetic fields and can be easily separated within 3 s using an external magnet. The adsorption results indicate that the obtained imprinted polymers have fast kinetics, an ultrahigh adsorption capacity of 479.9 mg g −1 , and satisfactory selectivity towards the template molecule. The prepared materials have excellent stability with no obvious deterioration after six adsorption–regeneration cycles. In addition, a method for determination of gallic acid (GA) in pomegranate rind was developed, using a combination of the prepared polymers used as solid-phase extraction (SPE) sorbents and high-performance liquid chromatography (HPLC) for rapid isolation and determination of GA. The limit of detection of the proposed method is 0.001 μg mL −1 , and the intra and inter-day relative standard deviations (RSDs) are lower than 3.8 % and 5.3 %, respectively. The recoveries of GA from pomegranate rind extract are in the range 98.2–103.6 % with RSDs lower than 4.3 %.
Selective and rapid extraction of gallic acid in pomegranate rind
研究领域:
材料科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2017
·Vol. 41
·期 2
·540-547
·
IF 2.557
Junjie Zhang,Benqiang Li,Huijuan Yue,Jing Wang,Yuansuo Zheng
With the combined surface imprinting technique and immobilized template strategy, molecularly imprinted magnetic nanoparticles were successfully prepared and coupled with high-performance liquid chromatography to selectively separate and determine gallic acid from the pomegranate rind. On the surface of carboxyl-functionalized magnetic nanospheres, thin imprinting shells were formed using dopamine as monomer and crosslinker. The characteristics, polymerization conditions, and adsorption performances of the resultant nanomaterials were investigated in detail. In addition of good crystallinity, satisfactory magnetism, and uniform morphology of the obtained polymers, they had rapid binding kinetics, high adsorption capacity, and favorable reusability. In the mixed solution of four hydroxybenzoic acids, the prepared nanomaterials have an excellent selectivity to gallic acid with an imprinting factor of as high as 17.5. Therefore, the polymers have great potentials in specific extraction and enrichment of gallic acid from the complex natural resources.
研究领域:
材料科学
·
分析化学
·
天然产物研究
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产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2020
·Vol. 60
·期 11
·2761-2769
·
IF 1.917
Huimin Xia,Kun Sui,Tengteng Ge,Fazong Wu,Qiqi Sun,Zhongwei Wang,Liang Song,Xiaowen Huang,Qing Yu
Punica granatum peel extractive (PPE), a novel stabilizer of polyethylene, is investigated in this study. Oxidation onset temperature (OOT), carbonyl index (CI), melt flow rate (MFR), tensile strength, and elongation at break are used to characterize the effects of PPE, which are also compared with commercial antioxidant (Irganox 1010) with the presence of tetrakis (2,4-di-tert-butylphenol)[1,1-biphenyl]-4,4′-diylbisphosphite (PEPQ). Long-term and short-term aging results show that samples modified by PPE or Irganox 1010 (PE-PPE 0.12% -P and PE-1010 0.12% -P samples) have comparable CI value and stability of OOT. However, compared with PE-PPE 0.12% -P sample, much higher CI and larger change of MFR is detected for PE-1010 0.12% -P after UV irradiation and five extrusions. It suggests that PPE is better protector for PE against UV light and mechanical shear force. All results indicate that the effect of PPE in protecting PE is comparable or much better than Irganox 1010 and it can be used as multiple stabilizers for PE. Moreover, the stabilities of PE modified with PPE alone (PE-PPE 2% ) is also investigated. Results show that PE-PPE 2% sample has good thermo-oxidative, UV and processing stabilities. All results reveal that PPE is a good candidate of PE stabilizer and it could avoid the usage of PEPQ in protecting PE.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2017
·
IF 3.981
Guangying Sun,Yanfang Liu,Hasanjan Ahat,Aijin Shen,Xinmiao Liang,Xingya Xue,Yuqin Luo,Jian Yang,Zhao-Sheng Liu,Haji Akber Aisa
In this study, “two dimensional” molecularly imprinted solid-phase extraction (2D-MIP-SPE) of semi-preparative grade was constructed to fast purify ellagitannins in pomegranate husk extract with the help of crystallization and reverse-phase liquid chromatgoraphy (RPLC). Ellagic acid and punicalagin imprinted polymers were synthesized in batch mode and two semi-preparative MIP-SPE columns were individually packed. After investigaing “functional complementation”, 2D-MIP-SPE was constructed using ellagic acid MIP and punicalagin MIP-SPE as the first and second dimension, respectively. Then, pomegranate husk extract was fast divided into four fractions individually enriching in ellagic acid, granatin A, punicalagin and ellagic acid glucoside by 2D-MIP-SPE. With the aid of crystallization and RPLC, ellagic acid (13.5 mg) and punicalagin (53.4 mg) were fast obtained in 30 min. Ellagic acid glucoside was purified to the purity near 100% with a recovery of 86.1%. Granatin A (92%) was directly obtained by 2D-MIP-SPE with the recovery of 81.8%. All above indicated that 2D-MIP-SPE was highly efficient in natural product purification. The concept of “functional complementation” was expected to be a useful tool in the construction of 2D-MIP-SPE.
研究领域:
分析化学
·
天然产物化学
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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）