Preparation and characterization of pH‐sensitive hydrogel fibers based on hydrolyzed‐polyacrylonitrile/soy protein

Yu, Liping; Yan, Dongyan; Sun, Gang; Gu, Liwei

doi:10.1002/app.27689

Cited by 26 publications

(12 citation statements)

References 37 publications

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“…For H-PAN, most of the CN groups convert to COO − groups. 33 Therefore, the H-PAN membrane exhibits a peak at approximately 1674 cm −1 , which corresponds to the CO bond in the COO − groups. After PEI deposition (LbL0.5), the intensity of the N−H bend and C−N stretch of the CONH group increases at approximately 1555 cm −1 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Layer-by-Layer Assembly of Aquaporin Z-Incorporated Biomimetic Membranes for Water Purification

Wang

et al. 2015

Environ. Sci. Technol.

133

108

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We fabricated a biomimetic nanofiltration (NF) membrane by immobilizing an Aquaporin Z (AqpZ)-incorporated supported lipid bilayer (SLB) on a layer-by-layer (LbL) complex polyelectrolyte membrane to achieve excellent permeability and salt rejection with a high stability. The polyelectrolyte membranes were prepared by LbL assembly of poly(ethylenimine) (PEI) with positive charges and poly(sodium 4-styrenesulfonate) (PSS) with negative charges alternately on a porous hydrolyzed polyacrylonitrile (H-PAN) substrate. AqpZ-incorporated 1,2-dioleloyl-sn-glycero-3-phosphocholine (DOPC)/1,2-dioleoyl-3-trimethylammo-nium-propane (chloride salt) (DOTAP) vesicles with positive charges were deposited on the H-PAN/PEI/PSS polyelectrolytes membrane surface. The resulting biomimetic membrane exhibited a high flux of 22 L·m(-2)·h(-1) (LMH), excellent MgCl2 rejection of ∼97% and NaCl rejection of ∼75% under an operation pressure of 0.4 MPa. Due to the attractive electrostatic interaction between SLB and the polyelectrolyte membrane, the biomimetic membrane showed satisfactory stability and durability as well as stable NF flux and rejection for at least 36 h. In addition, the AqpZ-containing biomimetic membrane was immersed in a 0.24 mM (critical micellar concentration, CMC) Triton X-100 solution for 5 min. The flux and rejection were slightly influenced by the Triton X-100 treatment. The current investigation demonstrated that the AqpZ-incorporated biomimetic membranes fabricated by the LbL method led to excellent separation performances and robust structures that withstand a high operation pressure for a relatively long time.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Layer-by-Layer Assembly of Aquaporin Z-Incorporated Biomimetic Membranes for Water Purification

Wang

et al. 2015

Environ. Sci. Technol.

133

108

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“…[18][19][20][21] Among them, soy protein isolate (SPI) is a plentiful plant protein possessing very high nutritional values and ingredient functionalities. [22][23][24][25] The main components of SPI are glycinin ($60%) with a molecular weight of 360 kDa and b-conglycinin ($40%) with a molecular weight of 180 kDa. 16,23,26,27 However, the utilization of soy protein isolate as nanoparticles drug delivery systems is still limited by its poor solubility in water.…”

Section: Introductionmentioning

confidence: 99%

Folic acid-conjugated soybean protein-based nanoparticles mediate efficient antitumor ability in vitro

et al. 2016

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In this study, soy protein isolate was hydrolyzed by compound enzymes to give aqueous soy protein with low molecular weights. Folic acid modified and free soy protein nanoparticles were successfully prepared by a desolvation method as target-specific drug delivery, respectively. Ultraviolet spectrophotometry demonstrated that folic acid was successfully grafted onto soy protein. The shape and size of folic acid modified soy protein nanoparticles were detected by transmission electron microscopy, scanning electron microscope, and dynamic light scattering. In addition, a series of characteristics including kinetic stability, pH stability, and time stability were also performed. Doxorubicin was successfully loaded into folic acid modified soy protein nanoparticles, and the encapsulation and loading efficiencies were 96.7% and 23%, respectively. Doxorubicin-loaded folic acid modified soy protein nanoparticles exhibited faster drug release rate than soy protein nanoparticles in PBS solution (pH = 5). The tumor penetration and antitumor experiments were done using three-dimensional multicellular tumor spheroids as the in vitro model. The results proved that folic acid modified soy protein nanoparticles display higher penetration and accumulation than soy protein nanoparticles, therefore possessing efficient growth inhibitory ability against multicellular tumor spheroids.

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“…Protein-based nanoparticles are very interesting as they are relatively easy to prepare and their sizes distribution can be monitored (DeFrates et al, 2018). Soybean protein isolate (SPI), the enriched form of soy protein, is one of the plant proteins most widely utilized as a food ingredient (Liu et al, 2008;Riche and Williams, 2010;Yu et al, 2008). It possesses a balanced composition of polar, non polar and charged amino acids.…”

Section: Introductionmentioning

confidence: 99%

Nanotechnology for enhancing the production of meat-like flavour from enzymatic hydrolyzed soybean protein isolate [pdf]

Fadel¹,

Mahmoud²,

Saad³

et al. 2019

Acta Sci Pol Technol Aliment

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Background. Enzymatic hydrolyzed vegetable proteins have been recommended as safe precursors of process flavours. However, the degree of hydrolysis limits their production on an industrial scale. Nanotechnology can enhance the enzymatic hydrolysis of soybean protein. Therefore, the aim of the present study was to use the enzymatic hydrolyzed soybean protein isolate (E-SPI) nanoparticles for producing a high yield of meat-like process flavour. Material and methods. Ball milling, high-speed homogenization and ultra-sonication were used for preparation of SPI nanoparticles with average range 10-17 nm. The volatile compounds were analyzed by headspace solid phase microextraction (HS-SPME) and gas chromatography coupled with mass spectrometry (GC-MS). The odour attributes of beefy, roasty, savoury, sulphurous and overall acceptability were selected to describe the meat-like process aroma. Results. The total volatiles in the headspace of the meat-like process flavour based on SPI nanoparticles showed a higher yield compared with the untreated sample. Thiols containing compounds, especially the potent odorants of meat-like flavour, were predominant in both samples. However, their yield was significantly higher in the SPI nanoparticles sample. An agreement was found between the intensity of the attributes selected and the aroma composition of the two meat-like flavours investigated. Conclusion. The results of this study suggest that using protein nanoparticles as the main precursors of the process flavours is considered a new chance for innovation in nanoscience. Future studies will be carried out on improving the quality and quantity of vegetable protein nanoparticles that can be used as precursors of another process flavours.

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Preparation and characterization of pH‐sensitive hydrogel fibers based on hydrolyzed‐polyacrylonitrile/soy protein

Cited by 26 publications

References 37 publications

Layer-by-Layer Assembly of Aquaporin Z-Incorporated Biomimetic Membranes for Water Purification

Layer-by-Layer Assembly of Aquaporin Z-Incorporated Biomimetic Membranes for Water Purification

Folic acid-conjugated soybean protein-based nanoparticles mediate efficient antitumor ability in vitro

Nanotechnology for enhancing the production of meat-like flavour from enzymatic hydrolyzed soybean protein isolate [pdf]

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