INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Zongwei Hao,Ailong Hu,Juntao Cheng,Zhenni Ma,Zhaofeng Li,Jiali Lv,Huajian Xu,Huifang Ge,Hongyan Wang,Zhenyu Yu,Zhongwen Xie,Yiqun Du
The digestibility of starch-based foods is receiving increased attention. To date, the full understanding of how including L-theanine (THE) can modify the structural and digestive properties of starch has not been fully achieved. Here, we investigated the multi-scale structure and digestibility of maize starch (MS) regulated by THE in ultrasound field and the molecular interactions . Ultrasound disrupted the structure of starch granules and opened the molecular chains of starch, promoting increased THE binding and producing more low-order or disordered crystal structures. In this case, the aggregation of starch molecules, especially amylose , was reduced, leading to increased mobility of the systems. As a result, the apparent viscosity, G', and G" were significantly decreased, which retarded the starch regeneration. Density functional theory calculations indicated that there were mainly non-covalent interactions between THE and MS, such as hydrogen bonding and van der Waals forces. These interactions were the main factors contributing to the decrease in the short-range ordering, the helical structure, and the enthalpy change (ΔH) of MS. Interestingly, the rapidly digestible starch (RDS) content of THE modified MS (MS-THE-30) decreased by 17.89 %, while the resistant starch increased to 26.65 %. These results provide new strategies for the safe production of resistant starch.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Huikang Yang,Yingling Miao,Lipeng Chen,Zhuoran Li,Ruimeng Yang,Xiangdong Xu,Zhaosong Liu,Li-Ming Zhang,Xinqing Jiang
Redox-responsive theranostic nanoparticles based on poly-( N -ε-carbobenzyloxy- l -lysine) (PZLL) grafted hyaluronan (HA) (HA-g-SS-PZLL) copolymers were constructed for hepatocellular carcinoma diagnosis and therapy. These hyaluronan derivatives formed nanoparticles via a self-assembly process in aqueous solution at low concentration. Theranostic nanoparticles were obtained after loading hydrophobic doxorubicin (DOX) and superparamagnetic iron oxide (SPIO) into the core of the nanoparticles via a dialysis method. Theranostic nanoparticles exhibited redox triggered DOX release behavior, and faster DOX released from theranostic nanoparticles was detected under a reducing environment compared with slow DOX release under a normal physiological environment. Confocal laser scanning microscopy (CLSM), flow cytometry and Prussian blue staining against HepG2 cells demonstrated that HA-g-SS-PZLL theranostic nanoparticles were capable of delivering DOX and SPIO into the cells. The analysis of the anticancer effect revealed that the HA-g-SS-PZLL theranostic nanoparticles shown higher cytotoxicity against HepG2 cells than DOX-loaded HA-g-PZLL nanoparticles. In vitro T 2 magnetic resonance imaging (MRI) results exhibited that theranostic nanoparticles showed a good contrast enhancement effect, and the r 2 relaxivity value was approximately 231 Fe mM − 1 s − 1 . Finally, the theranostic nanoparticles acted as nanoprobes for HepG2 tumor-bearing BALB/c mice for in vivo MRI. Therefore, HA-g-SS-PZLL copolymers have great potential as theranostic nanoparticles for tumor-targeted diagnosis and treatment.
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JOURNAL OF FOOD ENGINEERING
·
2024
·
IF 5.3
Obafemi Ibitayo Obajemihi,Jun-Hu Cheng,Da-Wen Sun
The effect of plasma functionalized water (PW) pretreatment and influencing factors including treatment time and voltage were investigated on the drying kinetics, nutrition and sensory properties of tomato slices during infrared-accelerated pulsed vacuum drying (IR-PVD). Results revealed that PW pretreatment caused disruptions in tomato cellular structure that were greater with increasing treatment time and voltage, due to strong acidification and etching from reactive species in PW. These disruptions accelerated the removal of moisture during IR-PVD to shorten drying time by 25%, and improve visual appearance, rehydration, porosity, phenols and flavonoids, soluble solids, lycopene, ascorbic acid, but reduced chewiness, gumminess and hardness properties. Overall, the findings revealed the propitious potentials of PW and indicated the significant effects of PW influencing factors for accelerating drying characteristics and increasing the functional and nutrition properties of tomato slices during IR-PVD, providing a theoretical basis for developing novel energy-saving drying approaches.
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Catalysts
·
2024
·Vol. 14
·期 8
·490
·
IF 3.8
Xingxing Chen,Qing Wu,Somboon Chaemchuen,Francis Verpoort
The ring-opening polymerization of L-lactide is a crucial route for producing biodegradable polylactides (PLAs). Developing an efficient catalyst for this process poses significant challenges. Herein, we report the successful incorporation of nickel during the crystallization of ZIF-67, the derivation of the abundant and stable CoO source, to obtain the composite magnetic Ni@CoO@ZIF-67 using the solid-state thermal (SST) method. The characterization of the resulting materials revealed that nickel atoms are well dispersed in the composite CoO@ZIF-67, imparting additional magnetic properties. The composite Ni@CoO@ZIF-67 demonstrated superior performance as a heterogeneous catalyst for the ring-opening polymerization of L-lactide compared to reference materials such as Ni-Hmim, CoO, ZIF-67, and CoO@ZIF-67. Furthermore, the magnetic property of Ni@CoO@ZIF-67 offers practical advantages, enabling easier separation and recycling of the catalyst. Notably, the SST method facilitates the single-step synthesis of composite magnetic Ni@CoO@ZIF-67 under solvent-free conditions, representing a significant advancement in catalyst development. This approach not only simplifies the synthesis process but also inspires further developments of heterogeneous magnetic catalysts for a variety of effective and diverse reactions.
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Current Research in Food Science
·
2025
·
IF 7
Zinuo An,Liangbin Hu,Yuyin Fan,Zhenbin Liu,Hongbo Li,Dan Xu,Lu Tian,Jiayi Zhang,Haizhen Mo
Temperature malfunctions that occur frequently during cold chain transportation threaten the shelf life of meat products. This study developed a thermosensitive high-internal-phase Pickering emulsion (HIPE) co-stabilized by starch sodium octenyl succinate (SSOS) and nisin for encapsulating L-menthol, aiming to enhance the shelf-life of pork meatballs under cold-chain interruptions. SSOS-Nisin composite particles (SNCP) exhibited excellent interfacial stabilization via hydrogen bonding, hydrophobic interactions, and electrostatic forces, forming HIPEs with tunable viscosity and freeze-thaw-triggered L-menthol release. Rheological and stability analyses confirmed that the optimum viscosity of 1.89 Pa s was achieved with 10 % SNCP-stabilized HIPEs, which also exhibited excellent colloidal stability. In simulated cold-chain failure scenarios, freeze-thaw cycles induced rapid L-menthol release, achieving complete eradication of foodborne pathogenic microorganisms within 6 h. Applied to pork meatballs, HIPEs loaded with 160 mg/mL L-menthol significantly suppressed microbial growth, delayed lipid oxidation, maintained pH stability and hardness retention under bacterial contamination. These findings demonstrate the potential of thermoresponsive HIPEs as intelligent antimicrobial coatings for meat preservation.
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AQUACULTURE NUTRITION
·
2024
·Vol. 2024
·期 1
·5205506
·
IF 3
Dan Liu,Jiali Mi,Xiao Yan,Chaobin Qin,Junli Wang,Guoxing Nie
In the present study, we conducted a 10-week culture experiment to investigate the effects of taurine on the growth performance, antioxidant properties, and muscle quality of the common carp fed an oxidized lipid diet. There were five experimental groups with three replicates each. Based on the fresh fish oil group (FO), equal amounts of oxidized fish oil (with a thiobarbituric acid-reactive substances value of 49.57 ± 2.34 mg/kg) and 0 g/kg (OFO), 4 g/kg (OT4), 8 g/kg (OT8), and 12 g/kg (OT12) taurine were added to the diet, while the same composition ratio was maintained by changing the microcrystalline cellulose content. Compared to the FO group, the feed conversion ratio, weight gain rate, muscle crude lipid, and n-3/n-6 polyunsaturated fatty acids (PUFA) ratio were significantly lower in the group OFO ( P < 0.05). In addition, compared to the FO group, OFO fish showed an increased content of malondialdehyde and protein carbonylation and decreased hardness, brightness, pH, superoxide dismutase, and catalase levels in the muscle ( P < 0.05). Notably, the growth index significantly improved in the OT4 group compared to that in the OFO group ( P < 0.05). In addition, dietary taurine increased the crude lipid content, n-3/n-6 PUFA, antioxidant capacity, hardness, springiness, brightness, pH, and collagen content in the muscle compared with OFO fish ( P < 0.05). Moreover, taurine supplementation significantly reduced myofiber diameter and increased myofiber density ( P < 0.05) and enhanced the expression levels of paired box 7 ( pax7 ), myogenic factor 5 ( myf5 ), myogenic differentiation antigen ( myod ), and myogenic regulatory factor 4 ( mrf4 ) compared with that of the OFO group ( P < 0.05). Considering growth performance and muscle quality, the optimal supplemental levels of taurine in the oxidized lipid diet were 4 g/kg and 6.84–7.70 g/kg, respectively.
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Materials Today Communications
·
2024
·
IF 3.7
Lingli Xu,Jingbo Chen,Jing Zhu,Tianxiang Li,Chaoyun Shi
Recently, SiO 2 has attracted increasing attention as an anode material for lithium-ion batteries (LIBs) owing to its low cost and high theoretical specific capacity. However, its inherent poor conductivity limits its practical application. To address this issue, nanostructured material design is considered an effective solution. Herein, based on the traditional ammonium tartrate template-directed sol-gel method, we use low-cost and easily available L-tartaric acid in place of D, L-tartaric acid to prepare high-yield silica nanotubes (SNTs) with a thin wall (ca. 50 nm), small diameter (ca. 150 nm), rough surface and open ends, as well as tiny spongy-like silica nanoparticles (SNPs) by adjusting the feeding amount and feeding mode of NH 4 OH solution. The electrochemical characterization results suggest that the SNTs show better cyclability and rate performance than the SNPs, which maintain a reversible capacity of 741.3 mAh g −1 after 500 cycles at a current density of 0.4 A g −1 and deliver a high rate capacity of 819.4 mAh g −1 at a high current rate of 2 A g −1 . The excellent electrochemical performance suggests that hollow one-dimensional hollow nanotubes are more efficient in improving the electrochemical performance of SiO 2 than zero-dimensional nanoparticles , and SNTs with thin tube walls and rough surfaces are demonstrated to be fascinating and promising anode materials for LIBs.
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POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2013
·
IF 2.454
Jianwen Bu,Yucong Yu,Guzhanuer Aisikaer,Tiejin Ying
Mature green cherry tomato fruit were harvested and treated with ultraviolet-C (UV-C) irradiation at a predetermined dose of 4.2 kJ m −2 and stored at 18 °C for 35 days. The effects of UV-C treatment on firmness, cell wall compositions (pectin and cellulose), cell wall ultra-structure, levels of ethylene production, and activities of cell wall degrading enzymes in the fruit were investigated during storage. Major genes involved in cell wall degradation ( PME 2.1, Cel 1, PG cat and Exp 1) were also checked. Fruit firmness was better maintained in UV-C treated fruit corresponding with higher contents of cellulose and acid-soluble pectin. Transmission electron microscopy indicated that UV-C irradiation retarded cell wall disassembly in the pericarp. Ethylene production was significantly inhibited by UV-C treatment. The UV-C treatment also suppressed the transcriptional expression of PME2.1 , Cel1 , PGcat and Exp1 genes, and inhibited pectin methylesterase (PME; EC 3.1.1.11), polygalacturonase (PG; EC3.2.1.15) and cellulase (EC3.2.1.4) activities during storage. These results suggested that the inhibition of ethylene production, which in turn down-regulated expression of genes encoding cell wall degrading enzymes, might be one of the possible mechanisms of UV-C delaying tomato fruit softening.
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TETRAHEDRON-ASYMMETRY
·
2014
·
IF 2.165
Rui-Jie Chen,Gao-Wei Zheng,Yan Ni,Bu-Bing Zeng,Jian-He Xu
A new NADH-dependent carbonyl reductase Rh CR capable of efficiently reducing the ε-ketoester ethyl 8-chloro-6-oxooctanoate (ECOO) to give ethyl ( S )-8-chloro-6-hydroxyoctanoate [( S )-ECHO], an important chiral precursor for the synthesis of ( R )-α-lipoic acid, was identified from Rhodococcus sp. ECU1014. Using recombinant Escherichia coli cells expressing Rh CR and glucose dehydrogenase used for the regeneration of cofactor, 440 g L −1 (2 M) of ECOO were stoichiometrically converted to ( S )-ECHO in a space–time yield of 1580 g L −1 d −1 without the external addition of any expensive cofactor.
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Journal of Food Measurement and Characterization
·
2021
·Vol. 15
·期 2
·2064-2077
·
IF 2.431
Zhang Dong,Duan Xiaoliang,Wang Yuanyuan,Shang Bo,Liu Hui,Sun Hui,Wang Yuehua
The main aim of this study is to evaluate and compare the physicochemical properties, chemical composition, and in vitro antioxidant activities of rice bran oil (RBO) from five most popular japonica rice ( Oryza sativa L.) varieties planted in China. It was found that the AV and PV of RBOs were 0.45–1.18 mg KOH/g and 0.72–1.73 mmol/kg, individually. The L *, a *, and b * values of RBOs were 24.18–26.70, 1.84–2.54, and 6.35–9.01, respectively. RBOs were rich in linoleic acid (38.63–43.50%), oleic acid (34.23–41.20%), and palmitic acid (16.26–18.93%). POL + SLL (17.44–19.29%), OLL (16.06–17.67%), OOL (13.79–17.79%), and PLL (11.70–14.79%) were the predominant triacylglycerols of RBOs. RBO from different rice varieties contained abundant bioactive constituents such as tocopherols and tocotrienols (948.59–1461.90 mg/kg), squalene (2055.65–4456.79 mg/kg), γ-oryzanol (19391.15–30024.09 mg/kg), phytosterols (10632.74–13948.17 mg/kg), and polyphenols (127.55–358.84 mg/kg). Pigments such as carotenoids and chlorophylls varied from 6.47 to 14.29 mg/kg and 0.79 to 12.96 mg/kg. The DPPH, ABTS, FRAP, and ORAC value were 837.41–1055.64, 1592.38–2106.47, 244.27–557.13, and 170.16–1776.41 µmol TE/100 g, respectively. This work could provide useful information to consumers for choosing suitable vegetable oils based on their health needs.
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Journal of Essential Oil Bearing Plants
·
2024
·
IF 2.1
Runhu Xin,Miao Liang,Rui Wang,Yajian Wu,Wei Guan,Yuping Liu
To investigate the volatiles and odor-active compounds (OACs) in essential oils (EOs) from leaves, fresh fruits and seed shells of Platycladus orientalis (L.) Franco, three EOs were extracted and analyzed by hydrodistillation combined with gas chromatography-mass spectrometry (GC-MS), gas chromatography-mass spectrometry-olfactometry (GC-MS-O) and GC. The yields of three EOs were 0.22%, 0.48% and 1.94%, respectively; a total of 77 compounds were identified by comparing their mass spectra and retention index with those of the authentic standards or the related data reported in the references, and 29 odorants were determined as OACs. Among them, 58 volatile components were identified in the leaf EO, accounting for 98.19% of the total volatiles, of which 18 compounds were screened as OACs; 47 volatile components were determined in the fruit EO, representing 98.98% of the entire volatile oil, of which 12 compounds were sniffed as OACs; 49 volatiles were found in seed shell EO, covering 97.26% of the whole volatiles, of which 19 compounds were detected as OACs. OACs in three EOs were significantly different, and the odorants with higher concentrations included α-pinene, sabinene, δ-3-carene, myrcene, β-caryophyllene, α-terpinyl acetate, cedrol, etc., which could be used as indexes for optimizing extraction process parameters of POF EOs and evaluating EO quality. The in vitro antioxidant activity of three EOs was tested by DPPH assay, ABTS assay and FRAP assay.
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ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Huifang Wu,Qiqi Wang,Lingfeng Zhu,Xinyue Liu,Lizhong Liu,Changlun Tong
Chronic hyperglycemia in diabetes induces oxidative stress through excessive production of reactive oxygen/nitrogen species (ROS/RNS), leading to elevated 3-nitro-l-tyrosine (3-NT) concentration and depletion of endogenous antioxidants. This study presents a dual-mode sensing platform for simultaneous quantification of 3-NT and total antioxidant capacity (TAC) based on nitrogen- and boron-codoped carbon dots confined within AlPO-5 zeolite (N,B-CDs@AlPO-5). The composite exhibits robust room-temperature phosphorescence (RTP) with a quantum yield of 31.29% and a lifetime of 1.56 and 6 s aqueous afterglow. Leveraging these properties, time-resolved phosphorescence detection of 3-NT (10–1000 μM) with a detection limit of 2.19 μM is achieved due to the synergistic inner filter effect and static quenching. Concurrently, the composite’s excited triplet state-induced generation of superoxide radicals (O2.–) and Mn2+ → Mn3+ redox cycling collaboratively mediate 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation to form blue ox-TMB, enabling colorimetric analysis of antioxidants and achieving ascorbic acid determination (5–50 μM) with a detection limit of 1.47 μM. Crucially, the RTP platform demonstrates clinical utility through reliable simultaneous detection of 3-NT and TAC in urine samples. This dual-mode sensing strategy establishes a novel paradigm for diabetes screening through rapid and noninvasive urinalysis through multidimensional biomarker verification.
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