The effects of sweep frequency ultrasound thawing (SFUT) and fixed frequency ultrasound thawing (FFUT) on the water holding capacity (WHC), strength, color, rheological properties as well as moisture ...migration and distribution of myofibrillar protein (MP) gel from small yellow croaker (Larimichthys polyactis) were evaluated. The results showed that the MP gel from the SFUT sample had a smaller chromatic aberration (ΔE) (12.39), higher WHC (65.05%) and strength (101.03 g) than the MP gel from FFUT and flow water thawing (FWT) samples. Compared with FFUT and FWT groups, the MP gel from the SFUT sample had higher elasticity and smaller apparent viscosity. Meanwhile, the MP gel from the SFUT sample had higher immobilized water content and lowered free water content close to the fresh sample (FS). Overall, the MP gel from the SFUT sample had better gelling properties than the MP gel from the FFUT and FWT groups.
•The effect of sweep frequency ultrasound thawing (SFUT) on gel was studied.•The myofibrillar protein (MP) gel from the SFUT sample had larger strength.•The MP gel from the SFUT sample had better rheological properties.•The MP gel from the SFUT sample can retain more immobilized water content.•The moisture migration and distribution affect the quality of the gel sample.
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•Polysaccharide isolated from Phellinus linteus (PLP).•PLP inhibits inflammatory cytokine expressions in cell and animal inflammation model.•PLP inhibits MAPK pathway and NF-κB and ...AP-1 activation in the inflammatory response.•PLP inhibited PPAR pathway and it exists cross-talk between MAPK and PPAR pathways.
In the present study, the anti-inflammatory function of Phellinus linteus polysaccharide (PLP) was investigated in animal and cell inflammation models, and the anti-inflammatory mechanism of PLP was also explored. Sixty 8-week ICR mice were randomly divided into 3 groups, and DSS group and DSS + PLP group mice received 2.0% DSS and PLP was orally administered at 500 mg/kg/day. Our data showed that PLP administration obviously improved the health status of mice and inhibited DSS-induced pathological alterations and significantly reduced inflammatory cytokine expressions in the colonic tissues. In lipopolysaccharide-induced inflammation cell model, PLP supplement also significantly reduced inflammatory cytokine expressions and inhibited MAPK pathway as well as the translocations of NF-κB and AP-1. Meanwhile, PLP supplement regulated PPARα and PPARγ phosphorylation and blocked MAPK activation. Taken together, PLP exhibits anti-inflammatory function and its molecular mechanism may be involved in MAPK and PPAR signal pathways, which reduce the expressions of inflammatory cytokines.
Micro-nano-bubbles (MNBs) are gaseous structures, either single gas or mixed gases, with diameter from micron to nanometer, which have extensive uses in environmental management, cleaning, and ...biomedicines. MNBs have received much attention in recent years for their unique physicochemical characteristics, including large specific surface area, long residence time, high gas-liquid mass transfer efficiency, high zeta potential, and reactive oxygen species production. Although MNBs have exhibited outstanding performance, particularly in food safety and quality, their uniform size distribution and real-world applications in food still require further improvements. This review discusses the synthesis methods and major physicochemical properties of MNBs. Current research trends in the practical application of MNBs in food industry and their prospects in food processing to enhance functionality, nutrition, and sensory quality are also discussed. Future studies on technological developments of MNB and their exploration in food processing might help to improve food quality and safety.
Celotno besedilo
Dostopno za:
BFBNIB, DOBA, GIS, IJS, IZUM, KILJ, KISLJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
•Polysaccharides (BPSs) were obtained from fresh bitter gourd by TPP and UAE methods.•TPP and UAE greatly affected the physicochemical and biological properties of BPSs.•BPS-W had excellent ...antioxidant, α-amylase and α-glycosidase inhibitory activities.•BPS-A with the lowest Mws showed the best bile acid-binding capacity among the BPSs.
In this study, polysaccharides (BPSs) were obtained from fresh bitter gourd (Momordica charantia L.) by room temperature extraction techniques, including three-phase partitioning (TPP) and ultrasonic-assisted extraction (UAE) performed in different solvents. The results showed that the extraction methods had significant influence on the extraction yield, chemical composition, weight-average molecular weight (Mw), monosaccharide composition, preliminary structural characterization and microstructure of the BPSs. The BPS-W sample obtained from the bitter gourd residue via UAE in distilled water had a higher uronic acid content (24.22%) and possessed stronger antioxidant capacities and α-amylase and α-glycosidase inhibitory activities than BPS-C extracted with UAE in citric acid, BPS-A extracted with UAE in 1.25 mol/L NaOH/0.05% NaBH4, and BPS-J extracted from bitter gourd juice by TPP. Moreover, BPS-A, which had the lowest Mws, showed the best bile acid-binding capacity among the four BPSs. This study had great potentials for the preparation of bioactive polysaccharides from fresh vegetables.
•Three-phase partitioning (TPP) and gradient ethanol precipitation (GEP) are applied.•Polysaccharides (GPSs) were orderly prepared from raw garlic bulbs by TPP and GEP.•GPS80 had high carbohydrate ...and uronic acid contents, and low molecular weight.•GPS80 showed the stronger in vitro biological activities than the other three GPSs.
In the present study, three-phase partitioning (TPP) coupled with gradient ethanol precipitation (GEP) was developed for the first time to extract and isolate polysaccharides (GPSs) from raw garlic (Allium sativum L.) bulbs. Four kinds of fructose polymers, namely, GPS35, GPS50, GPS65, and GPS80, were obtained at the final ethanol precipitation concentrations of 35%, 50%, 65%, and 80% (v/v), respectively, and their physicochemical characteristics and in vitro biological activities were investigated. Results indicated that GPS80 had higher carbohydrate (86.68% ± 0.90%) and uronic acid (12.89% ± 0.09%) contents, lower weight-average molecular weight (8.93 × 103 Da), and looser surface morphology than the other three GPSs. Furthermore, among the four GPSs, GPS80 exhibited the strongest antioxidant capacities, inhibitory effects on α-amylase and α-glycosidase, and nitric oxide stimulatory activity on RAW264.7 macrophage cells in vitro. Therefore, this study provides a simple and feasible technological strategy for producing bioactive polysaccharides from raw Allium vegetables.
In this paper, four pectic polysaccharides (PFP-T, PFP-U, PFP-M, and PFP-UM) were obtained from fresh passion fruit (Passiflora edulis f. flavicarpa L.) peel by three-phase partitioning (TPP), ...ultrasound assisted TPP (U-TPP), microwave assisted TPP (M-TPP), and sequential ultrasound-microwave assisted TPP (UM-TPP) methods, respectively. Results demonstrated that ultrasound/microwave treatments before TPP separation obviously affected the yields, physicochemical properties, and structural characteristics of these pectic polysaccharides, and improved their rheological properties. The PFP-U obtained by U-TPP had the highest molar mass (436.9 × 103 g mol−1), the shortest homogalacturonan backbone, and the most rhamnogalacturonan side chains with a relatively rigid chain and possessed the best thermal stability and viscoelastic behavior. The PFP-UM obtained through UM-TPP showed the highest contents of total sugar (74.88%) and uronic acid (68.22%) with a flexible random coil, and exhibited the best steady-state fluid property. Therefore, our findings provide a promising technical strategy for producing pectic polysaccharides with desired functionalities from fresh fruit peels.
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•Pectic polysaccharides (PFPs) were obtained from fresh yellow passion fruit peel.•Three-phase partitioning (TPP)-based methods affected structural properties of PFPs.•Ultrasound/microwave treatments improve thermal and rheological properties of PFPs.•TPP-based methods as excellent technologies can be used to produce functional PFPs.
•Water-soluble Cur and Cur-D were prepared by an alkali-neutralization treatment.•Ferulic acid (FA)-grafted Cur conjugates (Cur-g-FA and Cur-D-g-FA) were fabricated.•FA-grafted Cur conjugates showed ...decreased physical and rheological properties.•Cur-g-FA and Cur-D-g-FA exhibited remarkably enhanced antioxidant activity in vitro.•FA-grafted Cur conjugates as potent antioxidant agents applied for functional foods.
In this study, water-soluble curdlan products (Cur and Cur-D) were prepared by an alkali-neutralization treatment process, after which ferulic acid (FA)-grafted Cur conjugates (Cur-g-FA and Cur-D-g-FA) were fabricated in the presence and absence of salt by adopting an approach involving free-radicals generated by the ascorbic acid/hydrogen peroxide redox pair under an inert atmosphere. Results showed that FA was successfully grafted onto the C-6 and C-4 positions of the Cur chains through covalent linkages and that the presence of salt exerted minor influences on the grafting ratios and structural characterizations of the products. Cur-g-FA and Cur-D-g-FA showed decreased crystallinity, thermal stability, and rheological properties, as well as a distinct surface morphology, when compared with those of native Cur. However, Cur-g-FA and Cur-D-g-FA also exhibited remarkably enhanced free-radical scavenging ability and antioxidant capacity in vitro. These results indicate that FA-grafted Cur conjugates have great potential application in the field of functional foods.
All-inorganic perovskite solar cells (PSCs) have become one of the most attractive research fields in recent years due to their excellent thermal stability and light stability as compared with their ...organic-inorganic hybrid counterparts. However, there is still a long way to go for their commercial application due to their low efficiency and poor stability under humidity conditions. Herein, an overview of the recent progress of all-inorganic PSCs based on interface engineering is provided. The main roles of interface engineering, adjusting energy-level alignment, enhancing charge transport capacity, passivating interface defects, modulating morphology of perovskite films, stabilizing perovskite phase, broadening spectral absorption, eliminating electrical hysteresis and enhancing operational stability, are summarized with examples, which paves the way for highly efficient and stable all-inorganic PSCs. Some of the latest progress in incorporating dopants to charge transport materials and modifying interface properties in all-inorganic PSCs are also covered.
This review focuses on the application of interface engineering strategies in all-inorganic perovskite solar cells.
Ultrasonic irradiation for modified pectin preparation has become a research hotspot, but the influence of ultrasonic frequency is rarely studied. Therefore, in this study, mono frequency (MFU) and ...simultaneous dual frequency (SDFU) ultrasounds were used to modify citrus pectin (CP), and the effects of different ultrasonic frequency modes on the physicochemical, structural, functional, and biological properties of CP were comparatively investigated. The results showed that ultrasonic irradiation at 40 kHz in the MFU mode led to a larger increment in the galacturonic acid content of CP, but greater reductions in its intrinsic viscosity, molecular weight, and degree of methoxylation than in the SDFU modes. Ultrasonic frequency had no significant influence on the main CP chain, but rather on its neutral sugar side chains. The scanning electron microscopy (SEM) results suggested that CP treated by ultrasound at 40 kHz in the MFU mode exhibited fewer aggregates or looser networks than other ultrasonic treatments. Compared with the original CP, ultrasound treatment at different frequency modes effectively enhanced the thermal stability of CP, but remarkably lowered its shear thinning fluid behavior and liquid-like property. Moreover, among ultrasonically treated CPs, the CP obtained through ultrasound at 40 kHz in MFU mode exhibited the best antioxidant activity and bile acid-binding capacity in vitro.
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•Ultrasound at different frequencies was used to modify citrus pectin (CP).•Mono frequency ultrasound (MFU) at 40 kHz greatly affected CP's structural features.•Larger changes in rheological and thermal properties of CP caused by MFU at 40 kHz.•Ultrasonic-treated CP at 40 kHz showed a better biological activity than the others.
•Four different solvents were used to extract Hericium erinaceus polysaccharides (HEPs).•Extraction solvents had significant effects on physicochemical properties of HEPs.•HEP-C extracted with citric ...acid showed stronger bioactivities than HEP-W and HEP-S.•Citric acid can be used in food processing and for the extraction of bioactive PSs.
In this study, hot water, 0.9% NaCl, citric acid, and 1.25 M NaOH/0.05% NaBH4 were separately used for the extraction of water-soluble H. erinaceus polysaccharides (HEPs; HEP-W, HEP-S, HEP-C, and HEP-A) from the fruit body of Hericium erinaceus. The physicochemical properties and biological activities were then investigated and compared. Results showed that the extraction solvents exhibited significant effects on the extraction yields, molecular weights, monosaccharide compositions, preliminary structural characteristics, microstructures of HEPs and on their contents, such as neutral sugar, uronic acid, protein, and β-(1 → 3)-glucan. In vitro antioxidant activity assays indicated that HEP-C extracted with citric acid solution showed stronger scavenging abilities on hydroxyl and DPPH radicals and antioxidant capacities than HEP-W and HEP-S. Moreover, HEP-C exhibited the strongest inhibitory effects on α-glycosidase and α-amylase activities. Therefore, HEP-C extracted with citric acid can be developed as a potential bioactive ingredient for applications in food, medicine, and cosmetics industries.
