INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yuejie Qiu,Leping Zhang,Fenglun Zhang,Xichuang Cheng,Li Ji,Jianxin Jiang
XOS production from lignocellulose using organic carboxylic acids and alkyd acids has been widely reported. However, it still faces harsh challenges such as high energy consumption, high cost, and low purity. Pyruvic acid (PYA), a carbonyl acid with carbonyl and carboxyl groups, was used to produce XOS due to its stronger catalytic activity. In this work, XOS was efficiently prepared from COS in an autoclave under the condition of 0.21 M PYA-121 °C-35 min. The total yield of XOS reached 68.72 % without producing any toxic by-products, including furfural (FF) and 5-hydroxymethylfurfural (5-HMF). The yield of xylobiose (X 2 ), xylotriose (X 3 ), xylotetraose (X 4 ), and xylopentaose (X 5 ) were 20.58 %, 12.47 %, 15.74 %, and 10.05 %, respectively. Meanwhile, 89.05 % of lignin was retained in the solid residue, which provides a crucial functional group for synthesizing layered carbon materials (SRG-a). It achieves excellent electromagnetic shielding (EMS) performance through graphitization, reaching −30 dB at a thickness of 2.0 mm. The use of a PYA catalyst in the production of XOS has proven to be an efficient method due to lower temperature, lower acid consumption, and straightforward operation.
研究领域:
生物化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Luowen Sun,Jiayi Zhong,Hongyang Zhou,Xiaoqi Liu,Jin Gu,Chuanshuang Hu,Xiuyi Lin
Camellia oleifera shells (COS) are agricultural by-products that commonly discarded and burned, causing pollution to the environment. Due to their high holocellulose content, COS present a promising and cost-effective biomass resource, retaining both cellulose and hemicellulose. Leveraging this potential, holocellulose separators were fabricated via dissolution-regeneration and nonsolvent-based phase separation methods. The obtained holocellulose separator demonstrated a high porosity rate of 68.2 %, good thermal stability (to 190°C) and high ionic conductivity in sodium-ion batteries (2.38 mS/cm). Furthermore, the battery assembled with the holocellulose separator exhibited higher specific capacity and better stability compared to those using glass fiber separators, highlighting its potential for sustainable and high-value applications.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2025
·Vol. 48
·期 1
·e70082
·
IF 2.8
Bincheng Gong,Lingqi Shen,Yu Wang,Zuguang Li,Guohua Zhu
Tea saponin has garnered tremendous interest for its potential use in surfactant and drug synthesis. This research was designed to develop a technique based on pH-responsive switchable deep eutectic solvents (SDESs) for extracting tea saponins from Camellia oleifera seed meal. SDES synthesized from hexanoic acid and triethanolamine (1:1 molar ratio) offered the optimum extractive performance and the optimal conditions were obtained through single-factor experiments: 30 wt% water content in SDES, solid-liquid ratio of 1:30 g/mL, 60°C extraction temperature, 30 min extraction time, and acid volume of 1500 µL. The extraction yield was 162.14 mg/g after optimization, which increased by 15.65% and 9.47% compared to water and ethanol extraction methods, respectively. After pH adjustment, 98.95% of the tea saponins were recovered in the bottom phase. After precipitation and freeze-drying procedures, the purity of the tea saponin solid was 62.9%.
研究领域:
食品科学
·
环境科学
·
植物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2025
·Vol. 15
·期 1
·
IF 5.1
Huanling Lan,Xueyuan Lin,Huanhuan Ma,Liuying Lu,Wenxia Liao,Yuting Wang,Yi Chen,Chang Li
Camellia oleiferaoil (CO) is an important edible oil with excellent nutritional value. Recently, there has been an increasing market demand for oils with distinct flavor profiles. However, the formation mechanisms of characteristic aromas in CO remain unclear. Therefore, this study investigated the effects of roasting (170 °C, 0–30 min) on free amino acids, soluble sugars, and volatile components in camellia seeds and the corresponding oils. To further elucidate the generation mechanisms of flavor compounds in CO, reaction systems simulating the Maillard reaction and lipid oxidation were constructed. The results show strong correlations between volatile compounds and both soluble sugars and free amino acids during roasting. The key flavor precursors identified included arginine, glutamic acid, glycine, histidine, leucine, phenylalanine, and lysine, as well as sucrose and glucose. The simulated systems indicated that the flavor compounds in CO were mainly derived from the Maillard reaction and lipid oxidation, with significant interactions enhancing its unique flavor. This study potentially provides scientific guidance for the production and flavor control of fragrant CO.
研究领域:
食品科学
·
风味化学
·
脂质研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Separations
·
2021
·Vol. 8
·期 9
·144
·
IF 2.777
Li Liu,Shiling Feng,Tao Chen,Lijun Zhou,Ming Yuan,Jinqiu Liao,Yan Huang,Hongyu Yang,Ruiwu Yang,Chunbang Ding
Camellia oleiferaoil has attracted increasing attention due to its well-balanced composition. In this study, we evaluated the oil content and chemical composition ofC. oleiferaoil cultivated in southwest China. The results showed that the acid and peroxide values were in line with the optimal quality index of the national standard of China. Oleic acid was the most predominant and important fatty acid, which accounted for 80.34–86.18%. The α-tocopherol, polyphenols and squalene ranged from 112.36 to 410.46 mg/kg oil, 14.22 to 53.63 mg/kg oil and 14.80 to 52.49 mg/kg oil, respectively. Principal component analysis (PCA) results showed that the synthesis score of introduced cultivars (‘Changlin 3’, ‘Changlin 4’ and ‘Changlin 18’) was higher that the local cultivars (‘Chuanya 21’ and ‘Chuanlin 2’). This research demonstrated that the introducedC. oleiferacould adapt to the environment and climate of southwest China and large-scale plant of these introduced cultivars. In addition, theC. oleiferaoil rich in unsaturated fatty acid has enormous potential to become a kind of functional oil and possesses great prospects for pharmaceutical and industrial applications.Keywords:C. oleiferaoil;introduced cultivars;chemical composition;principal component analysis
研究领域:
植物学
·
食品科学
·
农业科学
✓ 已验证
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Huanling Lan,Wenxia Liao,Huanhuan Ma,Liuying Lu,Xueyuan Lin,Yuting Wang,Yi Chen,Chang Li
High-temperature roasting is a key process in preparing Aromatic Camellia oleifera Abel. seed oils (ACSOs). To investigate the effect of roasting temperature on its comprehensive quality, this paper analyzed the effects of five roasting temperatures (140 °C, 150 °C, 160 °C, 170 °C, 180 °C) on the quality characteristics, safety indicators and flavor characteristics of ACSOs. Results showed that with increasing roasting temperature, the p-anisidine value (p-AV) of the ACSOs was gradually raised, while the squalene content was progressively reduced. When the temperature exceeded 160 °C, the peroxide value (PV) and non-enzymatic browning index (BI) were significantly increased ( P < 0.05 ). The contents of total phenols and α-tocopherol were peaked at 160 °C and 150 °C respectively before declining. Although the 3-MCPD ester content (0.038 ± 0.003–0.069 ± 0.017 mg/kg) was higher than unroasted oil, all samples complied with European Union (EU) safety limits, and no benzo [a] pyrene [BaP] was detected. Fatty acid composition analysis revealed that oleic acid content was significantly lowered by roasting at 150 °C and 180 °C ( P < 0.05 ). A total of 44 volatile compounds were identified, among which aldehydes, ketones, and pyrazines were determined as the key aroma volatile components. The number of odor-active compounds (OAV ≥ 1) was increased from five to twenty-three. Through multidimensional study, this paper clarified the synergistic regulatory effects of roasting temperature on the flavor, nutrition, and safety of ACSOs, thereby providing a theoretical basis and processing reference for the targeted quality improvement of ACSOs. .
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Sheng Zhang,Xiangzhou Li
We isolated and purified polysaccharide from the Camellia oleifera Abel. seed cake (CCP) and studied its hypoglycemic activity in vitro . The molecular weight of CCP was 4736 Da and the monosaccharide molar composition ratio was: Xylose :Glucuronic acid:Galactosamine:Mannose = 10.9:4.4:2.6:1.8. The CCP contained conjugated proteins and belonged to acidic polysaccharide, which can promote the consumption of the glucose in the medium by HepG2 cells within the range of 0.125–0.500 mg/mL. Relative consumption rate (RCR) of the glucose was the highest at 0.5 mg/mL, exceeded that of the metformin hydrochloride, as well as that of Tea Polysaccharide under the same concentration. A meaningful structure activity relationship (SAR) of hypoglycemia polysaccharides had established. This result suggests that CCP can be used as hypoglycemic medicine or health food.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 12
·2752
·
IF 4.2
Zhimin Yang,Yu Wang,Xichang Wu,Wenxuan Quan,Qi Chen,Anping Wang
This study prepared sulfonatedCamellia oleiferashell biochar usingCamellia oleiferashell agricultural waste as a carbon source, and evaluated its performance as a catalyst for preparing biodiesel. The biochar obtained from carbonizingCamellia oleiferashells at 500 °C for 2 h serves as the carbon skeleton, and then the biochar is sulfonated with chlorosulfonic acid. The sulfonic acid groups are mainly grafted onto the surface ofCamellia oleiferashell biochar through covalent bonding to obtain sulfonic acid type biochar catalysts. The catalysts were characterized by Scanning Electron Microscope (SEM), X-ray diffraction (XRD), Nitrogen adsorption-desorption Brunel-Emmett-Taylor Theory (BET), and Fourier-transform infrared spectroscopy (FT-IR). The acid density of the sulfonatedCamellia oleiferafruit shell biochar catalyst is 2.86 mmol/g, and the specific surface area is 2.67 m2/g, indicating high catalytic activity. The optimal reaction conditions are 4 wt% catalyst with a 6:1 alcohol to oil ratio. After esterification at 70 °C for 2 h, the yield of biodiesel was 91.4%. Under the optimal reaction conditions, after four repeated uses of the catalyst, the yield of biodiesel still reached 90%. Therefore, sulfonatedCamellia oleiferashell biochar is a low-cost, green, non-homogeneous catalyst with great potential for biodiesel production by esterification reaction in future development.
研究领域:
生物化学
·
环境科学
·
化学工程
·
可再生能源
✓ 已验证
DOI
PubMed
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Chengyu Jin,Xiao Wang,Xianghe Meng,Qin Ye
The attenuation of atopic dermatitis (AD) by Camellia oil was investigated in Raw 264.7 macrophages and HaCaT keratinocytes cell lines in this paper. Results showed that phenolic-abundant Camellia oil (PACO) by the AEE method showed the lowest expression levels of pro-inflammatory cytokines, including TNF-α, IL-6 and IL-1β in LPS-induced Raw 264.7 cells, followed by the cold-pressed Camellia oil (CPCO), then the commercial refined Camellia oil (CRCO). This may be attributed to a higher content of polyphenols in PACO, particularly for typical phenolics such as caffeic acid, quercetin, kaempferol, kaempferol-3-O-[2-O-β-D-galactopyranosyl-6-O-α-L-rhamnopyranosyl]-β-D-glucopyranoside (KGRG) and kaempferol-3-O-[2-O-β-D-xylopyranosyl-6-O-α-L-rhamnopyranosyl]-β-D-glucopyranoside (KXR), which are associated with lower NO levels in model cells and higher antioxidant capacities in DPPH, ABTS, and FRAP experiments. In HaCaT keratinocytes, exposure to TNF-α/IFN-γ resulted in an 8-fold and 10-fold increase in CCL-17 and IL-33, compared with control , indicating skin inflammation occurred. Camellia oil treatment improved this inflammation, embodied by a significant restoration of skin inflammatory mediators, and this improvement is dose-dependent. High-dose PACO exhibited the best anti-skin inflammatory effects. The mRNA expression levels of MMP1 , MMP9 , MMP25 , VEGFC and TNFRSF6B were also significantly down-regulated after PACO treatment, indicating its potential for skin barrier protection. Moreover, 800 μg/mL PACO significantly alleviated the cell apoptosis rate and regulated the apoptosis-related biomarkers at gene expression and protein expression levels ( Bax , Bcl-2 and Caspase-3 ). Analysis results on the JC-1 ΔΨm and mitochondrial ROS indicated that mitochondrial damage was reversed after the Camellia oil treatment, which accounted for its alleviation effects on apoptosis related to inflammation. Overall, Camellia oil, rich in phenolics, exhibited great therapeutic potential for AD treatment.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2017
·Vol. 22
·期 10
·1562
·
IF 2.861
Tai-Mei Di,Shao-Lan Yang,Feng-Yu Du,Lei Zhao,Tao Xia,Xin-Fu Zhang
One new and three known triterpenoid saponins were isolated and identified fromCamellia oleiferaseeds through IR, NMR, HR-ESI-MS and GC-MS spectroscopic methods, namely oleiferasaponin A3, oleiferasaponin A1, camelliasaponin B1, and camelliasaponin B2. The structure of oleiferasaponin A3was elucidated as 16α-hydroxy-21β-O-angeloyl-22α-O-cinnamoyl-23α-aldehyde-28-dihydroxymethylene-olean-12-ene-3β-O-[β-d-galactopyranosyl-(1→2)]-[β-d-xylopyranosyl-(1→2)-β-d-galactopyranosyl-(1→3)]-β-d-gluco-pyranosiduronic acid. Camelliasaponin B1and camelliasaponin B2exhibited potent cytotoxic activity on three human tumour cell lines (human lung tumour cells (A549), human liver tumour cells (HepG2), cervical tumour cells (Hela)). The hypoglycemic activity of oleiferasaponin A1was testified by protecting pancreatic β-cell lines from high-glucose damage.Keywords:Camellia oleifera;triterpenoid saponin;oleiferasaponin A3;cytotoxic activity;hypoglycemic activity
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2025
·Vol. 14
·期 19
·3314
·
IF 5.1
Xue Wu,Yunhe Chang,Mingfa Song,Juncai Hou,Hongxia Feng
To unlock the potential value of the emulsified by-product from the aqueous enzymatic extraction (AEE) of Camellia oleifera seed oil, this study introduced an innovative approach for its food industrial application. We applied spray-drying microencapsulation technology to convert the emulsion-phase (EP) by-product into value-added microcapsules (EPM). The properties of EPM were systematically compared with those of microcapsules derived from the oil phase (OPM). The encapsulation efficiencies of EPM and OPM were 83.94% and 86.53%, respectively. Scanning electron microscopy revealed the formation of irregular spheroids with smooth surfaces and intact structures, with EPM exhibiting superior particle uniformity (D50= 1.11 μm) compared to OPM (D50= 2.30 μm). Fourier-transform infrared spectroscopy confirmed the successful encapsulation of EP. Differential scanning calorimetry indicated good thermal stability of the microcapsules, and the oxidative stability of EPM (24.75 h) was 9.2 times higher than that of the unencapsulated EP and 13.15 h longer than that of OPM. Lipidomic analysis using LC-MS/MS identified 477 lipid species across five subclasses—glycerolipids, glycerophospholipids, fatty acids, prenol lipids, and sphingolipids—revealing distinct lipid profiles between EPM and OPM. This microencapsulation strategy offers a sustainable approach to valorize aqueous enzymatic extraction by-products, with promising applications in functional foods and nutraceuticals, thereby enhancing the economic and environmental sustainability ofCamellia oleiferaseed oil processing.
研究领域:
食品科学
·
脂质化学
·
微胶囊技术
·
功能食品
·
营养学
·
食品加工
·
可持续利用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Yating Long,Jiahui Wen,Banghui Xu,Liang Zeng,Liangdi Zhu,Mengwu Xiao,Manxia Lu,Zhian Wang,Lanqing Deng
Porous biochar materials (BC) have shown excellent performance in energy storage and water treatment adsorption. Carbonization of agricultural and forestry solid waste and fixation in the form of stable biochar to form biochar materials can achieve green "waste utilization for treatment wastewater". In this study, BC samples were generated by using Camellia oleifera shell (COS) as raw material and K 2 CO 3 as green activator in-situ pyrolysis . The adsorption behavior of COS biochar in aqueous solution was evaluated using phenol as a pollutant probe. The synergistic effect of pyrolysis temperature and K 2 CO 3 activation promoted the development of the pore structure of BC. The X-ray photoelectron spectroscopy results indicated that K 2 CO 3 activation promoted the formation of C-C defects and promoted phenol adsorption. KBC-900 exhibited superior absorption capacity for phenol (300.15 mg/g). The activation of K 2 CO 3 also promoted the adsorption of oxygen. In addition, using H 2 O 2 for regenerating biochar did not show a significant decrease in the adsorption rate after five cycles (decline rate < 5 %). The strong adsorption capacity of KBC-900 for phenol might be due to the presence of π-π interactions, hydrogen bonds , and van der Waals interactions during the adsorption process .
✓ 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）