INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yihan Sun,Xu Huang,Sainan Guo,Yuze Wang,Dingding Feng,Xiuping Dong,Hang Qi
Currently, people eat Undaria pinnatifida ( UP ) in a single way, and processing homogeneity is serious. However, UP has not gained any traction in the 3D printing industry to date. This study explored the incorporation of soy protein isolate (SPI), pea protein (PP), xanthan gum (XG), guar gum (GG), corn starch (CS), and potato starch (PS) into UP slurry liquid, the primary component of the study, to formulate a UP gel ink. The UP gel 3D printing ink system based on UP paste was established and characterized. The results show that hydrogen bonds are formed, and three-dimensional gel network structure is formed in all UP gel inks. UP gel inks containing high concentrations of SPI and GG exhibited good texture and rheological qualities and good 3D printing effect, with storage modulus ( G ′) values of 8440.405 ± 3.893 and 8111.730 ± 3.585 Pa. The loss of modulus ( G ″) values were 1409.107 ± 3.524 and 1071.673 ± 3.669 Pa. Unfortunately, the properties of other UP gel inks are not suitable, resulting in poor 3D printing results. The food 3D printing method developed in this study provides valuable insights for expanding food 3D printing material choices and achieving high-value applications of UP .
研究领域:
食品科学
·
生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Sanying Hou,Hailong Hu,Qing Fu,Tiyang Xiao,Jin-Qi Xie,Siew-Hwa Chan,Mengjun He,Bin Miao,Lan Zhang
The use of biomass as a catalyst offers a cost-effective and efficient approach for various processes, including the activation of peroxymonosulfate (PMS) to degrade contaminants. In this study, we successfully obtained Fe and N co-doped graphene-like hierarchical porous structure carbon (Fe-N/BC) by using undaria pinnatifida (wakame) as the precursor. The Fe-N/BC catalyst was utilized to activate PMS and degrade tetracycline (TC). Characterization results demonstrated an even distribution of Fe and N on the surface of the porous structure carbon. Compared to BC@PMS and N/BC@PMS, the Fe-N/BC@PMS system exhibited excellent degradation performance, achieving an 83.9 % degradation of TC in just 5 min with an ultralow catalyst dosage (Ca = 0.05 g/L) and a high TC concentration (TC = 0.03 g/L). Furthermore, experiments on radicals quenching and electron paramagnetic resonance (EPR) analysis indicated that singlet oxygen ( 1 O 2 ), a non-radical species, was demonstrated as the primary reactive oxygen species (ROS). The degradation mechanical analysis suggested that zero-valent iron (Fe 0 ), pyridinic N, graphitic N, and Fe-N x in the Fe-N/BC were the reason for the high catalytic activity. Moreover, the degradation pathways of TC were suggested through the use of LC-MS. Additionally, the ECOSAR system was employed to assess the toxicity of the intermediate products. This study reveals the active site and its mechanism in Fe-N composite biocarbon catalysts, providing a new method for synthesizing algal biocarbon catalysts.
研究领域:
环境科学
·
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
·
2019
·
IF 3.775
Yongyi Yu,Yajun Zhang,Cebin Hu,Xinyuan Zou,Yang Lin,Yangyuan Xia,Lijun You
An immunologically active polysaccharide named as UPP-2 (1035.52 kDa) was isolated from Undaria pinnatifida using traditional water extraction followed by DEAE Sepharose fast flow chromatography. UPP-2 was proven to be a low sulfated polysaccharide with relatively abundant uronic acid (13.08 ± 0.67%). UPP-2 mainly consisted of xylose (64.55%), glucose (23.81%), arabinose (5.90%) and mannose (4.26%), and its main glycosidic linkage types included →2)- α -D-Xylp-(1→, →4)- α -D-Glcp-(1→, α -D-Xylp-(1→ and →2,4)- β -D-Xylp-(1 → . Results indicated that UPP-2 significantly promoted the proliferation and pinocytic capacity of RAW264.7 cells, and upregulated the mRNA expressions of iNOS, TNF- α , IL-6 and IL-1 β at 100–600 μg/mL with a maximum of 195, 42, 768 and 539 times of those of the negative control, respectively. Moreover, UPP-2 significantly increased the secretions of nitric oxide , TNF- α and IL-6 at 100–600 μg/mL (8.0, 73.1 and 188.7 times compared to those of the negative control, respectively), as well as promoted the production of IL-1 β obviously at 600 μg/mL. Overall, UPP-2 could be served as a potential dietary supplement or functional food based on its immunostimulatory activity.
研究领域:
海洋生物学
·
免疫学
·
生物化学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2024
·Vol. 59
·期 3
·1724-1737
·
IF 2.6
Yihan Sun,Jiaying Ren,Xiang Li,Kailing Sun,Dingding Feng,Xiuping Dong,Hang Qi
Summary Rich in numerous nutrients, undaria pinnatifida ( UP ) exhibited a broad spectrum of biological properties, including anti-inflammatory, anti-bacterial, anti-cancer, and antioxidant properties. A sexual pigment protein complex known as phycocyanin (PC) was the perfect photosensitiser and had no negative effects. Due to their superior qualities, hydrogels were also widely employed in tissue engineering, medication administration, and food packaging at the same time. The aim of this work was to investigate the impact of UVB irradiation on the gel characteristics of PC- UP hydrogels using UVB irradiation technology rather than chemical crosslinking approach. The results showed that the G ′ value of PC- UP hydrogel increased from 114.17 ± 0.58 Pa to 156.72 ± 0.82 Pa and the G ″ value increased from 36.80 ± 0.79 Pa to 58.05 ± 1.06 Pa after UVB irradiation. At the same time, the texture properties of hydrogel were significantly improved, and the hardness, adhesion and chewiness were increased to 214.02 ± 3.85, 198.51 ± 4.25 and 195.81 ± 5.69, respectively. After UVB irradiation, hydrogen bond was formed in PC- UP hydrogel to improve its thermal stability. In conclusion, the results show that PC decomposes with alginic acid, potassium salt, and sodium salt in UP under UVB irradiation to form a gel network structure, which enhances its gel properties. This study provides guidance for the photo response of PC- UP hydrogels, provides ideas for the application of PC- UP hydrogels, and broadens the application field of future hydrogels.
研究领域:
食品科学
·
生物材料学
·
海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2020
·Vol. 55
·期 12
·3533-3541
·
IF 2.773
Dingpeng Zhou,Jing Liu,Shaowei Liu,Xue Liu,Xiaozhi Tang,Xueze Lv
Summary Undaria pinnatifida insoluble dietary fibre (UIDF) was modified by alkali (NaOH solution) and complex enzyme (xylanase and cellulase) to improve the physicochemical properties. Scanning electron microscopy revealed that the surface structure after modification was rough and loose. The characteristic absorption peaks in Fourier transfer infrared spectrometry and X-ray diffraction patterns showed that enzymes can further hydrolyse the UIDF than alkali mainly in amorphous region, and increased the soluble dietary fibre content to 16.31%. The alkaline and complex enzymatic modification both resulted in higher water retention capacity, water swelling capacity, oil absorption capacity, glucose adsorption capacity and the inhibition ability towards α-amylase. The complex enzymatic modification exhibited better features in almost all properties, and the modification did not change the inhibiting mechanism on α-amylase (non-competitive type). Overall, both two modifications could effectively improve the properties of UIDF, which may promote its use in food applications.
研究领域:
食品科学
·
生物技术
·
营养学
✓ 已验证
产品关联
DOI
高影响因子
Food & Function
·
2021
·Vol. 12
·期 18
·8626-8634
·
IF 5.396
Fengzhi Qiao,Xiaoting Yu,Shanshan Tie,Yannan Chen,Shuai Hou,Mingqian Tan
Food-borne nanoparticles from Undaria pinnatifida (UPFNs) were prepared and successfully applied as nanocarriers for microelement zinc delivery. UPFNs were spherical nanoparticles with average sizes of about 4.07 ± 1.09 nm, which chelated with zinc ions through amino nitrogen and carboxyl oxygen atoms as characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and 1H nuclear magnetic resonance spectroscopy. Thermodynamic analysis revealed that the overall chelation process between UPFNs and zinc ions was a spontaneous enthalpy-driven endothermic reaction. Compared to zinc sulfate, UPFN–Zn2+ showed higher solubility both in phytic acid solution and the process of gastrointestinal digestion. Meanwhile, no obvious cytotoxicity was found in UPFNs and UPFN–Zn2+. Specifically, UPFN–Zn2+ could successfully rescue cell viability, DNA replication activity and restore cell proliferation ability in zinc-deficient cells induced by a specific zinc chelator TPEN. Overall, UPFNs might serve as efficient, stable, and safe nanocarriers for zinc delivery.
研究领域:
纳米技术
·
营养学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Qi-Wu Zhong,Tao-Shun Zhou,Wen-Hui Qiu,Ya-Kun Wang,Qiao-Li Xu,Song-Ze Ke,Si-Jia Wang,Wei-Hua Jin,Jian-Wei Chen,Hua-Wei Zhang,Bin Wei,Hong Wang
The brown seaweed Undaria pinnatifida polysaccharides show various biological activities, but their hypoglycemic activity and the underlying mechanism remain unclear. Here, three fractions of sulfated polysaccharides Up-3, Up-4, and Up-5 were prepared by microwave-assisted extraction from U. pinnatifida . In vitro assays demonstrated that Up-3 and Up-4 had strong α-glucosidase inhibitory activity, and Up-3, Up-4, and Up-5 could improve the glucose uptake in insulin-resistant HepG2 cells without affecting their viability. In vivo studies indicated Up-3 and Up-4 markedly reduced postprandial blood glucose levels. Up-U (a mixture of Up-3, Up-4, and Up-5), reduced fasting blood glucose levels, increased glucose tolerance and alleviated insulin resistance in HFD/STZ-induced hyperglycemic mice. Histopathological observation and hepatic glycogen measurement showed that Up-U alleviated the damage of the pancreas islet cell, reduced hepatic steatosis, and promoted hepatic glycogen synthesis. These findings suggest that Up-U could alleviate postprandial and HFD/STZ-induced hyperglycemia and was a potential agent for diabetes treatment.
研究领域:
海洋生物学
·
药理学
·
糖尿病研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2026
·
IF 12.1
Jialu Fang,Xinyi Mei,Jun Sun,Ping Hu,Yu Long,Wei Zheng,Haiming Duan,Zhaofeng Wu
This study develops a high-performance room-temperature (RT) hydrazine (N 2 H 4 ) gas sensing material based on sustainable algal biomass. A porous carbon material (US-1.5) was fabricated from Undaria pinnatifida and sodium alginate via ice-templating and freeze-drying, yielding a hierarchical meso/macroporous structure that facilitates gas diffusion. Natural heteroatoms enable in situ self-doping, modulating electronic structure and surface reactivity. First-principles calculations confirm S-doping enhances adsorption energy and promotes charge transfer, creating more active sites for gas-surface interactions. The resulting US-1.5 sensing material demonstrates a high response of 22.53k% to 500 ppm N 2 H 4 , rapid response/recovery times (21.3 s/2.5 s), a low detection limit of 0.138 ppm, excellent selectivity, and cycling stability. It also shows humidity-dependent dual-mode sensing. This work pioneers algal aerogel-derived sensing materials, demonstrating marine waste upcycling for green, cost-effective gas sensing in environmental and industrial safety applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2022
·Vol. 11
·期 6
·876
·
IF 5.561
Yu Li,Siyuan Fei,Deyang Yu,Lijuan Zhang,Jiaxuan Li,Ronggang Liu,Mingqian Tan
Pickering emulsions stabilized from natural sources are often used to load unstable bio-active ingredients, such as astaxanthin (AXT), to improve their functionality. In this study, AXT-loaded Pickering emulsions were successfully prepared by 2,2,6,6-tetramethy-1-piperidine oxide (TEMPO)-oxidized cellulose nanofibers (TOCNFs) fromUndaria pinnatifida. The morphology analysis showed that TOCNFs had a high aspect ratio and dispersibility, which could effectively prevent the aggregation of oil droplets. The stable emulsion was obtained after exploring the influence of different factors (ultrasonic intensity, TOCNFs concentration, pH, and ionic strength). As expected, AXT-loaded Pickering emulsions showed good stability at 50 °C and 14 days of storage. The results of simulatedin vitrodigestion showed that the emulsions exhibited higher release of free fatty acids (FFAs) and bioaccessibility of AXT than those in sunflower oil. Hence, our work brought new insights into the preparation of Pickering emulsions and their applications in protection and sustained, controlled release of AXT.Keywords:Undaria pinnatifida;nanocellulose;Pickering emulsion;stability;astaxanthin
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
Journal of Energy Storage
·
2024
·
IF 8.9
Chun-Feng Xue,Teng Wu,Wei Zhao,Yue-Yue Wei,Kai Lv,Xiao-Qing Li,Wen-Jun Yan,Xiao-Hong Li,Xiao-Gang Hao
In order to achieve attractive energy density and specific capacitance of electrochemical supercapacitor , multi-heteroatom self-doped carbon is prepared by pyrolyzing the aquatic biomass undaria pinnatifida (UP) filled with magnesium acetate (Mg(CH 3 COO) 2 ). The pyrolysis product of magnesium oxide (MgO), acting as rigid filling, can shape the pore and help to keep the original pore system . The resultant immersed-undaria-pinnatifida-based activated carbon (IUPAC-700) co-doped with multi-heteroatom shows specific surface area of 1116 m 2 g −1 , pore volume of 1.63 cm 3 g −1 and desired pore size distribution. The electrode basing on it delivers specific capacitance of 579.7 F g −1 at the current density of 0.50 A g −1 and 306.0 F g −1 at 100.0 A g −1 in the electrolyte of 1.0 M H 2 SO 4 . It exhibits a high specific capacitance of 488.6 F g −1 in the two-electrode system and provides a significant energy density of 28.7 W kg −1 at the power density of 164.0 W kg −1 . It also displays perfect cyclic life after 8000 times charge-discharge at the current density of 5.0 A g −1 . The assembled supercapacitor can power the LED lights. The sample IUPAC-700 featured with self-doped multi-heteroatoms is a very competitive electrode material for energy storage device with desired comprehensive performance.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Oceanology and Limnology
·
2022
·Vol. 41
·期 1
·300-313
·
IF 1.554
Ke Songze,Zhang Bo,Yu Yanlei,Wang Sijia,Jin Weihua,Wu Jian,Chen Jianwei,Zhang Huawei,Wei Bin,Wang Hong
A sulfated galactofucan designated as UpG was obtained from the brown algae Undaria pinnatifida by calcium chloride extraction. Chemical analyses showed that UpG is composed of galactose and fucose at a high sulfation level. Low-molecular weight UpGP-0.5 was prepared from UpG through acid hydrolysis for structure characterization. The backbones of UpG are determined to be α-(1,3)-Fuc, α-(1,4)-Gal, α-(1,3)-Gal, and α-(1,6)-Gal by GC-MS, FT-IR, NMR, and LC-MS analyses. Sulfate groups are modified at C2 and/or C4 of fucose and C3 and/or C4 of galactose. UpG could partially lower blood sugar and serum lipid levels in type 2 diabetic mice. Moreover, UpG treatment regulates the abundance of some specific gut microbiota, such as enriching the abundance of Muribaculum and Christensenellaceae, and reducing that of Bilophila , Tannerellaceae, Candidatus Saccharimonas and Anaerotruncus . The findings characterized the detailed structure of a sulfated galactofucan and investigated its potential for the treatment of type 2 diabetes mellitus.
研究领域:
海洋生物学
·
药理学
·
营养学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Jialu Fang,Ping Hu,Jun Sun,Bo Ran,Wei Zheng,Yu Long,Zhaofeng Wu,Haiming Duan
High-entropy carbon materials, a new class of functional materials, leverage multi-component synergy to precisely tune electronic structures and surface reactivity. Inspired by this concept, we developed biostructure-inspired high-entropy-like carbon materials derived from Undaria pinnatifida and applied them to room-temperature gas sensing. Freeze-drying followed by gradient carbonization produced a hierarchical turbinate-like porosity that mimics canine olfaction, while intrinsic multi-element (C/O/Na/Ca/P/S) coordination activated strong gas-surface interactions. DFT calculations confirmed that Ca doping increases hydrazine (N 2 H 4 ) adsorption energy from -0.412 eV to -1.532 eV and charge transfer from 0.039e to 0.070e, and elevates O 2 adsorption energy from -0.160 eV to -1.524 eV with charge transfer rising from 0.181e to 0.790e, validating the dopant's role in boosting surface reactivity. Strategic defect and morphology engineering, coupled with multi-element self-doping, further enriched active sites, enabling the UD-500 to achieve a 14.12k% response to 500 ppm N 2 H 4 at room temperature with a theoretical detection limit of 1.63 ppm, while exhibiting excellent repeatability, long-term stability (<3.5 % drift over 80 days), and humidity tolerance (11-94 % RH). This work establishes a marine-biomass route to high-performance gas sensors and advances the valorization of waste biomass.
✓ 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）