FOOD RESEARCH INTERNATIONAL
·
2021
·
IF 6.475
Yuan Chen,Huan Zhang,Xin Feng,Liang Ma,Yuhao Zhang,Hongjie Dai
In this study, the pineapple peel treated with different degrees of delignification was used to isolate lignocellulose nanocrystals (LCNC) by sulfuric acid hydrolysis. Controlling delignification treatments can adjust the morphology and structure of pineapple peel and the retention of lignin, thereby achieving the regulation of the properties of LCNC, such as morphology, crystallinity, hydrophobicity and rheological properties. The results of atomic force microscope (AFM), confocal laser scanning microscopy (CLSM), UV/visible (UV–Vis) spectroscopy and X-ray photoelectron spectroscopy (XPS) confirmed the presence of lignin in LCNC, showing a rod-like structure with the distribution of lignin. Regulating delignification of pineapple peel can adjust the average length (310 ∼ 460 nm), diameter (19 ∼ 38 nm), crystallinity (61% ∼ 71%) and hydrophobicity (contact angle 84° ∼ 60°) of the obtained LCNC by acid hydrolysis, and influence the performance of its stabilized Pickering emulsions. This work confirms that the properties of LCNC can be controlled through adjusting delignification degree, possessing great significance for the high value utilization of lignocellulosic agricultural waste.
研究领域:
材料科学
·
食品科学
·
农业废弃物利用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Hongjie Dai,Yue Huang,Huan Zhang,Liang Ma,Huihua Huang,Jihong Wu,Yuhao Zhang
Herein, the hierarchically processed pineapple peel was achieved by water (WT-PP), alkali (AT-PP), bleaching (BT-PP) and bleaching-alkali (PPC) treatments respectively for separate or simultaneous removal of hemicellulose and lignin. These treated pineapple peel were further fabricated into hydrogels (WT-PPH, AT-PPH, BT-PPH and PPCH, respectively) by a facile dissolution-regeneration process in ionic liquid . The structure and Congo red (CR) adsorption ability of the hydrogels were investigated and compared. The adsorption process conformed better to the pseudo-second-order kinetic and Langmuir isotherm models. The maximum adsorption capacity was 114.94 mg/g for WT-PPH, 77.52 mg/g for AT-PPH, 138.89 mg/g for BT-PPH and 75.19 mg/g for PPCH, implying the separate bleaching treatment could improve the CR adsorption capacity more. Moreover, the hydrogels displayed a pH-dependent behavior and good reusability during adsorption process. Based on removal of initial components and simple preparation method, this work would be beneficial for the development of agricultural residues-based biosorbents.
研究领域:
材料科学
·
环境科学
·
农业废弃物利用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Shumin Zhang,Xin Feng,Yue Huang,Yuxi Wang,Hai Chen,Yong Yu,Liang Ma,Yuhao Zhang,Hongjie Dai
In this study, the pineapple peel cellulose nanofibrils (PCNFs) were facilely isolated by a dilute alkali assisted ball milling technique, then used to adjust the stabilization of low internal phase oil-in-water emulsions (oil phase 30 vol%) stabilized by gelatin (GLT, 1 wt%). The ball milling with the aid of NaOH solution (3 wt%) efficiently promoted the purification and defibrillation of cellulose through a one-pot approach, showing an average length of 0.77 μm and crystallinity index of 43.5 %. With the increase of PCNFs concentration (0–1.0 wt%), the emulsions showed an increased droplet size (51.2–76.9 μm) and a gradually decreasing bottom water layer. The apparent viscosity, storage modulus (G') and loss modulus (G") of emulsions evidently increased with increasing PCNFs addition. The result of confocal laser scanning microscopy (CLSM) confirmed the stabilization mechanism of GLT/PCNFs emulsions, involving the interface adsorption by GLT and the formation of viscoelastic network structure by PCNFs. The environmental stabilities of GLT emulsion could be improved by introducing PCNFs, except for at high ionic strength (> 100 mM). Notably, PCNFs effectively avoided the adverse effect of GLT isoelectric point (pH 5) on the stability of emulsion.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Hong Zhu,Jun-Hu Cheng,Ji Ma,Da-Wen Sun
An effective method based on Fe 2+ assisted cold plasma (CP) to pretreat pineapple peel cellulose for the preparation of cellulose nanofibrils (CNF) was proposed in this study. The mechanism underlying Fe 2+ assisted CP pretreatment based on the structural changes of cellulose was investigated. Results showed that the cellulose preabsorbed Fe 2+ , followed by 60 min of CP treatment, and then was nanofibrillated into CNF via ultrasonication. Fe 2+ assisted CP treatment exhibited strong capacity to significantly decrease the degree of polymerization of cellulose and to enhance electrostatic repulsion of fibrils. Furthermore, the roughness and breakage were observed on the surface of pretreated cellulose. The content of inter-molecular hydrogen bonds and average crystallite size (D hkl ) also decreased significantly. The current results provided useful fundamental insights into Fe 2+ assisted CP and cellulose interaction, which should be beneficial to developing new pretreatment methods for disintegrating cellulose into CNF.
研究领域:
材料科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Huishuang Yin,Peiqin Song,Chunhui Zhou,Huihua Huang
This study focused on synthesis of innovative hydrogels with electric field response from modified pineapple peel cellulose and hericium erinaceus chitosan and gelatin based on Schiff base reaction. A series of hydrogels were prepared by oxidized hydroxyethyl cellulose , gelatin and chitosan at different deacetylation degree via mild Schiff base reaction. Subsequently experiments towards the characterization of oxidized hydroxyethyl cellulose/gelatin/chitosan (OHGCS) hydrogel polymers were carried out by FTIR/XRD/XPS, swelling performances and electric response properties. The prepared hydrogels exhibited stable and reversible bending behaviors under repeated on–off switching of electric fields, affected by ionic strength , electric voltage and pH changes. The swelling ratio of OHGCS hydrogels was found reduced as deacetylation degree increasing and reached the maximum ratio ∼ 2250 % for OHGCS-1. In vitro drug releasing study showed the both curcumin loading capacity and release amount of Cur-OHGCS hydrogels arrived about 90 % during 6 h. Antioxidation assessments showed that the curcumin-loaded hydrogels had good antioxidation activities, in which, 10 mg Cur-OHGCS-1 hydrogel could reach to the maximum of about 90 % DPPH scavenging ratio. These results indicate the OHGCS hydrogels have potentials in sensor and drug delivery system .
研究领域:
材料科学
·
生物医学工程
·
药剂学
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 11
·6123-6141
·
IF 6.123
Tang Lu,Huang Huihua
In this study, in order to minimize the degradation of curcumin, Pickering emulsion with embedded curcumin (PCNCs/EGCG-Cur) was prepared and stabilized by pineapple peel cellulose nanocrystals (PCNCs) and ( −)-Epigallocatechin-3-gallate (EGCG). The effect of EGCG on the stability and bioaccessibility of the embedded curcumin in Pickering emulsion was assessed. FTIR, XRD and zeta-potential analysis proved the construction of PCNCs/EGCG structure and CLSM showed typical oil-in-water system of PCNCs/EGCG-Cur. Furthermore, the addition of EGCG affected contact angles of the oil–water interface. 30-day storage period showed that the retained curcumin was about 70.35 ± 1.06% in PCNCs/EGCG(0.04%)-Cur, while the retention rate was 47.15 ± 0.98% in the control. PCNCs/EGCG(0.04%)-Cur was the most stable under the conditions of thermal and ultraviolet light treatments with the maximum retention rates of curcumin were 92.20 ± 1.05% and 93.56 ± 1.37%, respectively. Moreover, EGCG was found to improve the antioxidant activity of the prepared emulsions. Simulated digestion exhibited PCNCs/EGCG(0.04%)-Cur could improve the bioaccessibility of both EGCG (24.99 ± 3.29%) and curcumin (35.97 ± 1.26%). These results are conducive to the further application of EGCG in the emulsified food stabilized with cellulose nanocrystals.
研究领域:
食品科学
·
纳米技术
·
药学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Yuqian Zhou,Zhongxin Tan
Soft rot is one of the most susceptible soil-borne diseases of pakchoi ( Brassica chinensis L.), severely hindering its industrial development. The research aimed to evaluate the application effect of polyphenols extracted from pineapple peel waste in improving the rhizosphere soil environment of pakchoi infected by soft rot and promoting plant health and growth. We found that using pineapple peel polyphenols (PPPs) at 4 mg/mL concentration (P1 treatment) significantly improved soil quality, reduced pakchoi disease incidence, and effectively promoted pakchoi growth. Compared with the control group (CK), the P1 treatment led to a marked 79.97% reduction in diseased pakchoi leaves. Meanwhile, the rhizosphere soil structure showed reduced diseased genera and increased beneficial bacterial phyla, along with boosted soil enzyme activities. Furthermore, P1 treatment improved key growth parameters of pakchoi, including neck thickness (62.07%), plant height (57.43%), fresh weight (154.52%), dry weight (121.88%), maximum leaf length (47.28%), width (30.98%), and total chlorophyll content (50.11%). The application of PPPs has shown significant effects in enhancing the ecological environment of the diseased soil and reducing the incidence of soft rot disease of pakchoi and has great potential in increasing the yield of pakchoi. This study offers an eco-friendly and sustainable approach for the valorization of PPPs and the management of soil-borne diseases, which holds profound implications for enhancing crop quality, soil health, and human well-being.
研究领域:
农业
·
植物病理学
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土壤学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Gels
·
2025
·Vol. 11
·期 8
·631
·
IF 5.3
Yuxi Wang,Yong Yu,Shuhan Hu,Jinyao Yu,Yue Huang,Hongjie Dai
Pineapple peel cellulose nanofibrils (PCNFs) were facilely prepared by the ball milling method assisted by alkali solution (3 wt% NaOH) and a wet grinding medium, using various treated pineapple peels (hot water treatment (WT), bleaching treatment (BT), alkaline treatment (AT), and baleaching–alkaline treatment (ABT)) as raw materials. The structure of the obtained PCNFs (i.e., WT-PCNF, BT-PCNF, AT-PCNF, and ABT-PCNF) was characterized to analyze the influence of component intervention. The results indicated that NaOH-assisted ball milling did not change the crystal structure of cellulose, and the yield and thermal stability of the PCNFs was improved. The average diameters of WT-PCNF, BT-PCNF, AT-PCNF, and ABT-PCNF were 24.16, 21.53, 23.04, and 19.46 nm, respectively, in which BT-PCNF and ABT-PCNF exhibited a higher defibrillating degree and smaller diameter. Particularly, NaOH-assisted ball milling can promote the removal of non-cellulose components. The viscosity and modulus of BT-PCNF were relatively higher due to the presence of residual hemicellulose as a natural linker of fibers. The current research provides insights for simplifying the preparation and functionalization of nanocellulose.
研究领域:
材料科学
·
纳米技术
·
生物高分子工程
·
可持续材料
·
废物资源化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Food Science & Technology
·
2023
·
IF 2.3
Yuqian Zhou,Bushra Huma,Zhongxin Tan
Plant polyphenols’ antibacterial capabilities are just beginning to be applied in the environment. In this study, solvent recovery and concentration techniques were used to achieve zero-waste extraction of pineapple peel polyphenol (PPP) powder on an industrial scale. For environmental sterilization, PPP antibacterial agents (PAAs) were created. Their physicochemical and antibacterial qualities were examined, and technical and financial analysis was done. The results showed that (1) among the major PPP components, protocatechuic acid content was the highest (48.90 mg/L), followed by quercetin dihydrate (17.56 mg/L); (2) PAA sprays passed the tests for physicochemical properties like pH and heat resistance; (3) at the 8 mg/mL concentration, PAA achieved 100% bacterial inhibition below 40 °C; and (4) the production cost of 8 mg/mL PAA spray was only $273.41/t at 100,000 t industrial scale. These findings might offer an application prospect in the development of renewable bacteriocins from fruit and vegetable waste materials.
研究领域:
环境科学
·
生物技术
·
废物管理
·
药学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Hong Zhu,Ruilin Wang,Jun-Hu Cheng,Kevin M. Keener
In this study, an antibacterial material (CNF@CoMn-NS) with oxidase-like activity was created using ultrathin cobalt‑manganese nanosheets (CoMn-NS) with a larger specific surface area grown onto pineapple peel cellulose nanofibrils (CNF). The results showed that the CoMn-NS grew well on the CNF, and the obtained CNF@CoMn-NS exhibited good oxidase-like activity. The imidazole salt framework of the CNF@CoMn-NS contained cobalt and manganese in multiple oxidation states, enabling an active redox cycle and generating active oxygen species (ROS) such as singlet molecular oxygen atoms ( 1 O 2 ) and superoxide radical (·O 2 − ), resulting in the significant inactivation of Staphylococcus aureus (74.14%) and Escherichia coli (54.87%). Importantly, the CNF@CoMn-NS did not exhibit cytotoxicity. The CNF@CoMn-NS further self-assembled into a CNF@CoMn-NS paper with flexibility, stability, and antibacterial properties , which can effectively protect the wound of two varieties of pears from decay caused by microorganisms . This study demonstrated the potential of using renewable and degradable CNF as substrate combined with artificial enzymes as a promising approach to creating antibacterial materials for food preservation and even extending to textiles and biomedical applications.
研究领域:
材料科学
·
纳米技术
·
生物技术
·
食品科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2022
·
IF 11.889
Qin Wen,Yijia Chen,Xin Rao,Run Yang,Yiming Zhao,Jihui Li,Shuying Xu,Zhenyi Liang
Magnetic biochar has captured a great interest for remediation of environment as an easily separable carbonous adsorbent. Herein, a highly adsorptive magnetic biochar was manufactured through seawater mineral and K 2 FeO 4 co-promoted pyrolysis of jackfruit peel at 300 °C for removal of different cationic pollutants, and characterized by element analysis, FTIR, SEM-EDS, XRD, XPS and so on. MgFe 2 O 4 was generated without external base and a 19.42 emu/g saturation magnetization was achieved. Simultaneously, iron oxides and oxygen containing groups were introduced. The magnetic biochar exhibited 61.30 mg/g, 129.61 mg/g, and 1238.30 mg/g adsorption capacities for Cu 2+ , methylene blue (MB), and malachite green (MG) at 25 °C, respectively, and remarkably surpassed the corresponding pristine biochar. The adsorption of MB and MG was mainly realized by electrostatic interaction, hydrogen bonding, complexation, and π-π electron-donor–acceptor interaction, and that of Cu 2+ was attributed to electrostatic interaction, hydrogen bonding, and complexation.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 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）