Precipitation of proteins from soybean whey wastewater by successive foaming and defoaming

Li, Rui; Xintong, Ji; Yu, Zhu; Zhang, Yuran; Guan, Jing

doi:10.1016/j.cep.2018.04.012

Cited by 17 publications

(8 citation statements)

References 31 publications

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“…However, Figure shows that the increase of superficial air flow rate significantly reduced P u obtained at each asymptotic time from 65.1 to 33.7. In foam fractionation, increasing superficial air flow rate increased both the liquid holdup in foam and the amount of UK molecules adsorbed at bubble surfaces . As a result, both R A and separation efficiency increased.…”

Section: Resultsmentioning

confidence: 98%

“…In foam fractionation, air flow rate not only had significant effects on enrichment ratio and recovery yield, but also the separation efficiency . Thus in this section, the effects of superficial air flow rate on the variation of R A with time and P u were studied at pH 7.5, beta‐cyclodextrin concentration 0.20 g/L, 1.5% amount of silica gel added, and superficial air flow rates from 0.85 mm/s to 4.25 mm/s.…”

Section: Resultsmentioning

confidence: 99%

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Foam fractionation for enhancing silica gel adsorption of urokinase from human urine

Wang

Dou

et al. 2019

Asia-Pacific J Chem Eng

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In this work, foam fractionation (FF), a cost-effective method, was used to enhance the silica gel adsorption (SGA) of urokinase from human urine. The analysis of how FF enhanced the adsorption/desorption of urokinase onto silica gel was conducted. The results show that FF increased both the adsorption rate of urokinase onto silica gel and the activity concentration of urokinase adsorbed at silica gel by pre-enriching urokinase from urine. It also reduced the activity loss of urokinase in the desorption process. Then, a coupled technology of FF and SGA was developed. The effects of pH, superficial air flow rate, beta-cyclodextrin concentration, and amount of silica gel added on activity recovery yield and purification fold of urokinase were studied. At pH 7.5, superficial air flow rate 1.70 mm/s, beta-cyclodextrin concentration 0.2 g/L, and amount of silica gel added 0.9%, the activity recovery and purification fold of urokinase reached 89.5% and 56.8 in the coupled technology, which were 25.3% and 79.2% higher than those obtained by SGA alone, respectively. Furthermore, the amount of silica gel added in the coupled technology was 40.0% lower than that in SGA alone. Therefore, FF effectively enhanced the SGA of urokinase from human urine.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Foam fractionation for enhancing silica gel adsorption of urokinase from human urine

Wang

Dou

et al. 2019

Asia-Pacific J Chem Eng

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“…Hereby, soy whey proteins refer to the acid‐soluble proteins in soy whey waste which is the by‐product during SPI production by alkali‐soluble acid precipitation. Soy whey protein contains soybean trypsin inhibitor, soybean agglutinin, β‐amylase, and lipoxidase, which totally account for 9% to 15.3% of soy protein (Cao et al., 2023; Li et al., 2018). Subsequently, hydrophobic interactions between these primary particles occur to generate the basic protein aggregates.…”

Section: Formation Mechanism Of Soy Protein Gelmentioning

confidence: 99%

Recent advance in modification strategies and applications of soy protein gel properties

Liang,

Chen,

Fang

et al. 2023

Comp Rev Food Sci Food Safe

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Soy protein gel can be developed into a variety of products, ranging from traditional food (e.g., tofu) to newly developed food (e.g., soy yogurt and meat analog). So far, efforts are still needed to be made on modifying the gel properties of soy protein for improving its sensory properties as animal protein‐based food substitutes. Furthermore, there is always a need to regulate its gel properties for designing novel and tailored products of soy protein gels due to the fast‐growing plant protein‐based product market. This review gave an emphasis on the latest modification strategies and applications of gel properties of soy protein. The modifying methods of soy protein gel properties were reviewed from an aspect of composition or processing. Compositional modification included changing protein composition and gelling conditions and using additives, whereas processing strategies can be achieved through physical, chemical, and enzymatic treatments. Several compositional modification and processing strategies have been both proven to alter the gel properties of soy protein effectively. So far, soy protein gel has been applied in the field of food and biomedicine. In the future, more mechanistic studies on the modification methods are still needed to facilitate the full application of soy protein gel.

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“…foam at 25 ± 1 • C and a higher level at 40 ± 2 • C, E did not increase at 25 ± 1 • C but significantly increased at 40 ± 2 • C. In addition, elevating temperature could accelerate foam drainage by reducing the solution viscosity, so it increased E but decreased R[28].…”

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confidence: 92%

Separation of Protein-Binding Anthraquinones from Semen Cassiae Using Two-Stage Foam Fractionation

Ding

Wang²,

Yue

et al. 2019

Processes

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Anthraquinones are compounds of high medicinal value in many plants. Based on their good protein binding affinity, foam fractionation was attempted to separate them using proteins in the aqueous extract of Semen Cassiae as collectors. Firstly, the interaction between anthraquinones and Semen Cassiae proteins has been analyzed by the Stem–Volmer equation with physcion as a standard. The results show that physcion had good interaction with the proteins via hydrophobic forces. More importantly, the proteins effectively assisted the foam fractionation of several anthraquinones including aurantio-obtusifolin, aloe-emodin, rhein, emodin, chrysophanol, and physcion. On this basis, a two-stage foam fractionation technology was developed for process intensification using a foam fractionation with vertical sieve trays (VSTs). VSTs, initial feed concentration of total anthraquinones, temperature, volumetric air flow rate and pore diameter of gas distributor had significant effects on enrichment ratio and recovery yield of anthraquinones. Under suitable conditions, the enrichment ratio of total anthraquinones reached 47.0 ± 4.5 with a concentration of 939 ± 94 mg/L in the foamate while their total recovery percentage reached more than 47.7%. In addition, foam fractionation also increased the purity and hydroxyl radical scavenging activity of total anthraquinones. The results had significant implications for the separation of anthraquinones from Semen Cassiae.

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Precipitation of proteins from soybean whey wastewater by successive foaming and defoaming

Cited by 17 publications

References 31 publications

Foam fractionation for enhancing silica gel adsorption of urokinase from human urine

Foam fractionation for enhancing silica gel adsorption of urokinase from human urine

Recent advance in modification strategies and applications of soy protein gel properties

Separation of Protein-Binding Anthraquinones from Semen Cassiae Using Two-Stage Foam Fractionation

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