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1,572 Results Found

  • Article
  • Open Access
6 Citations
1,848 Views
15 Pages

24 June 2024

The present study demonstrates the effects of pH-shifting treatments and magnetic field-assisted pH-shifting treatments on the properties of myofibrillar protein (MP) in frozen meat. The solubility results indicate that the pH-shifting treatments inc...

  • Article
  • Open Access
765 Views
16 Pages

Effect of pH-shifting on the Physicochemical Properties of Pea Proteins and Its Effect on the Texture of Hybrid Gels Formed with Casein Micelles

  • Raiane Rodrigues da Silva,
  • Luis Henrique de Paula Souza,
  • Lucas Silva de Sousa,
  • Laura Destro Rodrigues,
  • Gustavo Schäfer Nogueira,
  • Luis Gustavo Lima Nascimento and
  • Antônio Fernandes Carvalho

20 August 2025

Hybrid systems combining animal and plant proteins are promising for developing sustainable, high-protein foods. However, structural incompatibility between proteins like casein and pea protein hinders the formation of stable systems such as gels. Th...

  • Article
  • Open Access
6 Citations
2,362 Views
25 Pages

Synergistic Effects of Ultrasound and pH-Shifting on the Solubility and Emulsification Properties of Peanut Protein

  • Zhuoran Jiao,
  • Zhiqiang Feng,
  • Siqi Zhao,
  • Yuwei Wang,
  • Miao Feng,
  • Qian Chen,
  • Baohua Kong and
  • Haotian Liu

2 March 2025

Peanut protein is a byproduct of peanut oil extraction with limited applications within the food sector due to its low solubility and emulsifying properties. This study investigated the influences and mechanisms of high-intensity ultrasound (HIU, 200...

  • Communication
  • Open Access
8 Citations
2,501 Views
11 Pages

17 May 2023

The aim of this study is to develop an antioxidant film based on pea protein isolate (PPI) without sacrificing the packaging properties. To achieve this, α-tocopherol was incorporated to impart antioxidant activity to the film. We investigated...

  • Article
  • Open Access
1 Citations
1,635 Views
17 Pages

29 October 2024

Hypoallergenic processing is an area worthy of continued exploration. In the treatment of the peanut protein (PP), pH shift was applied by acidic (pH 1.0–4.0) and alkaline (pH 9.0–12.0) treatment, after which the pH was adjusted to 7.0. F...

  • Article
  • Open Access
3 Citations
2,237 Views
16 Pages

25 November 2022

Downstream processing of biotechnologically produced carboxylic acids, such as succinic acid, poses environmental and economic challenges. Conventional downstream processes cause large amounts of waste salts, which have to be purified or disposed of....

  • Article
  • Open Access
10 Citations
2,521 Views
16 Pages

Recovery of Functional Proteins from Pig Brain Using pH-Shift Processes

  • Jaruwan Chanted,
  • Worawan Panpipat,
  • Ling-Zhi Cheong and
  • Manat Chaijan

26 February 2022

The goal of this work is to explore if pH-shift processing could be used as a cold refinery technique to manufacture pig brain protein isolate (PI). Pig brain protein had the highest solubility at pH 2 (acid method) and pH 12 (alkaline method). As th...

  • Article
  • Open Access
5 Citations
2,550 Views
16 Pages

Utilizing the pH-Shift Method for Isolation and Nutritional Characterization of Mantis Shrimp (Oratosquilla nepa) Protein: A Strategy for Developing Value-Added Ingredients

  • Kanchanaphon Chumthong,
  • Nisa Saelee,
  • Worawan Panpipat,
  • Atikorn Panya,
  • Natthaporn Phonsatta,
  • Sujichon Thangvichien,
  • Wannasa Mala-in,
  • Lutz Grossmann and
  • Manat Chaijan

23 July 2024

This study focused on the production of protein isolates from mantis shrimp (MS). The pH-shift method was investigated to understand its impact on the protein yield, quality, and properties of the produced isolates. The first step was determining how...

  • Article
  • Open Access
4 Citations
2,011 Views
16 Pages

3 January 2025

The demand for clean-cut seafood fillets has led to an increase in fish processing side streams, which are often considered to be low-value waste despite their potential as a source of high-quality proteins. Valorizing these side streams through inno...

  • Article
  • Open Access
4 Citations
2,313 Views
10 Pages

22 February 2023

Silver carp (Hypophthalmichthys molitrix) is a potential source for making surimi products. However, it has the disadvantages of bony structures, high level of cathepsines and muddy off-odor which is mainly caused by geosmin (GEO) and 2-methylisoborn...

  • Article
  • Open Access
2 Citations
828 Views
17 Pages

Effect of pH-Shifted Compound Heating Treatment on the Structure and Properties of Walnut Protein Isolate

  • Liwen Chai,
  • Wei Shi,
  • Yunxia Tan,
  • Xudong Che,
  • Jiankang Lu,
  • Bingyao Bai and
  • Chunlan Zhang

15 May 2025

This study aims to explore the effect of pH on the solubility of walnut protein isolate (WPI) across a pH range of 7.0 to 12.0. The findings reveal that WPI solubility increased with rising pH levels, reaching a maximum solubility of 61.13% (4.79 mg/...

  • Article
  • Open Access
763 Views
13 Pages

Whey Protein–Quercetin–Gellan Gum Complexes Prepared Using pH-Shift Treatment: Structural and Functional Properties

  • Na Guo,
  • Xin Zhou,
  • Ganghua Zhou,
  • Yimeng Zhang,
  • Guoqing Yu,
  • Yangliu Liu,
  • Beibei Li,
  • Fangyan Zhang and
  • Guilan Zhu

3 August 2025

The objectives of this study were to prepare whey protein–quercetin–gellan gum conjugates using the pH-shift method and to evaluate the impacts of varying pH values and quercetin concentrations on the interaction mechanisms and functional...

  • Article
  • Open Access
25 Citations
5,401 Views
19 Pages

27 April 2021

Impacts of processing technology (mechanical separation and pH-shift processing) on protein recovery from salmon, herring and cod backbones and the content of macro- and micronutrients in the recovered protein enriched products were investigated. Mec...

  • Article
  • Open Access
12 Citations
6,217 Views
13 Pages

7 September 2021

Electrified downstream processes for biotechnologically produced carboxylic acids reduce waste salt generation significantly and make biotechnological production ecologically and economically more attractive. In order to design, optimize, scale-up an...

  • Review
  • Open Access
4 Citations
2,194 Views
28 Pages

Physical Processing-Assisted pH Shifting for Food Protein Modification: A Comprehensive Review

  • Ruiqi Long,
  • Yuanyuan Huang,
  • Mokhtar Dabbour,
  • Benjamin Kumah Mintah,
  • Jiayin Pan,
  • Minquan Wu,
  • Shengqi Zhang,
  • Zhou Qin,
  • Ronghai He and
  • Haile Ma

3 July 2025

The increasing demand for sustainable protein sources has intensified interest in improving the processing efficiency of traditional proteins and developing novel alternatives, particularly those derived from plants and algae. Among various processin...

  • Article
  • Open Access
41 Citations
5,413 Views
14 Pages

18 February 2022

According to the Food and Agriculture Organization (FAO), protein demand is expected to increase globally by around 40% by 2030 as a response to the world’s population growth. Due to their clean label, vegan or vegetarian based applications, nu...

  • Article
  • Open Access
7 Citations
2,531 Views
15 Pages

23 October 2022

Goose liver isolate treated by pH shifting and pH shifting/non-enzyme phosphorylation with goose liver isolate was used as a control. The functional property differences in the protein and proteins involved in the interfacial layer treated with pH sh...

  • Article
  • Open Access
56 Citations
6,402 Views
14 Pages

4 August 2020

Ultrasonication alone or in combination with a pH-shifting method could be applied as means for improving the techno-functional properties and performance of barley protein ingredients in liquid food matrix. Ultrasound technology was utilised with an...

  • Project Report
  • Open Access
7 Citations
3,741 Views
18 Pages

Valorisation of Seafood Side-Streams through the Design of New Holistic Value Chains: WaSeaBi Project

  • Erasmo Cadena,
  • Ozan Kocak,
  • Jo Dewulf,
  • Bruno Iñarra,
  • Carlos Bald,
  • Monica Gutierrez,
  • David San Martin,
  • Jone Ibarruri,
  • Ann-Dorit Moltke Sørensen and
  • Grethe Hyldig
  • + 6 authors

23 February 2024

Growing demand in the fisheries sector has resulted in a high generation of side-streams that are mainly treated as waste despite their potential value in terms of protein, fatty acids, and minerals. The WaSeaBi project, funded by the EU under the Ho...

  • Article
  • Open Access
2 Citations
2,324 Views
14 Pages

29 May 2022

The temporal response of bacterial community, especially that of bacteria with Fe(III) reducing ability, in flooded paddy soils to initial pH changes, is not well-documented. This work demonstrated variations in concentration of Fe species, bacterial...

  • Article
  • Open Access
22 Citations
3,996 Views
15 Pages

28 March 2023

In this study, the interfacial behavior of high internal phase emulsions (HIPEs), stabilized by ultrasound combined with pH-shifting modified pea protein isolate (MPPI), was investigated, and its emulsification process and stabilization mechanism wer...

  • Article
  • Open Access
19 Citations
3,900 Views
14 Pages

4 June 2021

The effect of polyphenol removal (“dephenol”) combined with an alkaline pH shift treatment on the O/W interfacial and emulsifying properties of canola seed protein isolate (CPI) was investigated. Canola seed flour was subjected to solvent extraction...

  • Article
  • Open Access
14 Citations
4,245 Views
18 Pages

Protein Recovery of Tra Catfish (Pangasius hypophthalmus) Protein-Rich Side Streams by the pH-Shift Method

  • Hang Thi Nguyen,
  • Huynh Nguyen Duy Bao,
  • Huong Thi Thu Dang,
  • Tumi Tómasson,
  • Sigurjón Arason and
  • María Gudjónsdóttir

24 May 2022

Increasing protein demand has led to growing attention being given to the full utilization of proteins from side streams in industrial fish processing. In this study, proteins were recovered from three protein-rich side streams during Tra catfish (Pa...

  • Article
  • Open Access
5 Citations
2,817 Views
12 Pages

N20D/N116E Combined Mutant Downward Shifted the pH Optimum of Bacillus subtilis NADH Oxidase

  • Taowei Yang,
  • Longze Pan,
  • Wenhui Wu,
  • Xuewei Pan,
  • Meijuan Xu,
  • Xian Zhang and
  • Zhiming Rao

30 March 2023

Cofactor regeneration is indispensable to avoid the addition of large quantities of cofactor NADH or NAD+ in oxidation-reduction reactions. Water-forming NADH oxidase (Nox) has attracted substantive attention as it can oxidize cytosolic NADH to NAD+...

  • Article
  • Open Access
19 Citations
5,344 Views
22 Pages

Quality of Protein Isolates and Hydrolysates from Baltic Herring (Clupea harengus membras) and Roach (Rutilus rutilus) Produced by pH-Shift Processes and Enzymatic Hydrolysis

  • Tanja Kakko,
  • Annelie Damerau,
  • Anni Nisov,
  • Anna Puganen,
  • Saska Tuomasjukka,
  • Kaisu Honkapää,
  • Marko Tarvainen and
  • Baoru Yang

15 January 2022

Fractionation is a potential way to valorize under-utilized fishes, but the quality of the resulting fractions is crucial in terms of their applicability. The aim of this work was to study the quality of protein isolates and hydrolysates extracted fr...

  • Article
  • Open Access
760 Views
16 Pages

Emulsifying Properties of Oat Protein/Casein Complex Prepared Using Atmospheric Cold Plasma with pH Shifting

  • Yang Teng,
  • Mingjuan Ou,
  • Jihuan Wu,
  • Ting Jiang,
  • Kaige Zheng,
  • Yuxing Guo,
  • Daodong Pan,
  • Tao Zhang and
  • Zhen Wu

31 July 2025

An oat protein isolate is an ideal raw material for producing a wide range of plant-based products. However, oat protein exhibits weak functional properties, particularly in emulsification. Casein-based ingredients are commonly employed to enhance em...

  • Article
  • Open Access
68 Citations
6,220 Views
17 Pages

20 December 2020

Ultrasonic (US) treatment was combined with pH shifting (pHS) and mild thermal (40 °C) (T40) treatment (US/T40/pHS) to improve the solubility of potato protein. The effects of the ultrasonication frequency, ultrasonication time, and incorporation...

  • Communication
  • Open Access
18 Citations
3,618 Views
11 Pages

Shifting the pH Optima of (R)-Selective Transaminases by Protein Engineering

  • Chao Xiang,
  • Yu-Fei Ao,
  • Matthias Höhne and
  • Uwe T. Bornscheuer

5 December 2022

Amine transaminases (ATAs) are powerful biocatalysts for the stereoselective synthesis of chiral amines. However, wild-type ATAs usually show pH optima at slightly alkaline values and exhibit low catalytic activity under physiological conditions. For...

  • Feature Paper
  • Review
  • Open Access
15 Citations
4,076 Views
20 Pages

Engineering of GH11 Xylanases for Optimal pH Shifting for Industrial Applications

  • In Jung Kim,
  • Soo Rin Kim,
  • Uwe T. Bornscheuer and
  • Ki Hyun Nam

30 October 2023

Endo-1,4-β-xylanases belonging to the glycoside hydrolase (GH) 11 family hydrolyze the β-1,4-glycosidic linkages in the xylan backbone to convert polymeric xylan into xylooligosaccharides. GH11 xylanases play an essential role in sugar meta...

  • Article
  • Open Access
8 Citations
3,012 Views
11 Pages

15 September 2023

Plant-based milk is particularly suitable for fortification with multiple nutraceuticals because it contains both hydrophobic and hydrophilic domains that can accommodate molecules with different polarities. In this study, we fortified soymilk with t...

  • Article
  • Open Access
9 Citations
2,234 Views
18 Pages

24 October 2023

The objective of this research was to improve the protein extraction processes of Rastrelliger kanagurta (Indian mackerel) to generate protein isolate with enhanced bio-physico-chemical properties and gel-forming ability. To achieve this, two novel a...

  • Article
  • Open Access
7 Citations
3,363 Views
14 Pages

Dynamic pH and Thermal Analysis of Paper-Based Microchip Electrophoresis

  • Muhammad Noman Hasan,
  • Ran An,
  • Asya Akkus,
  • Derya Akkaynak,
  • Adrienne R. Minerick,
  • Chirag R. Kharangate and
  • Umut A. Gurkan

22 November 2021

Paper-based microchip electrophoresis has the potential to bring laboratory electrophoresis tests to the point of need. However, high electric potential and current values induce pH and temperature shifts, which may affect biomolecule electrophoretic...

  • Article
  • Open Access
9 Citations
13,698 Views
14 Pages

1H NMR Analysis of Cerebrospinal Fluid from Alzheimer’s Disease Patients: An Example of a Possible Misinterpretation Due to Non-Adjustment of pH

  • Thomas Cruz,
  • Stéphane Balayssac,
  • Véronique Gilard,
  • Robert Martino,
  • Christian Vincent,
  • Jérémie Pariente and
  • Myriam Malet-Martino

19 February 2014

Two publications from the same research group reporting on the detection of new possible biomarkers for the early diagnosis of Alzheimer’s disease (AD), based on the analysis of cerebrospinal fluid samples (CSF) with 1H Nuclear Magnetic Resonance (NM...

  • Article
  • Open Access
5 Citations
2,492 Views
15 Pages

We present the synthesis and analytical, spectroscopic and computational characterization of three amino-substituted benzo[b]thieno[2,3-b]pyrido[1,2-a]benzimidazoles as novel pH probes with a potential application in pH-sensing materials. The designe...

  • Article
  • Open Access
6 Citations
3,474 Views
12 Pages

30 June 2019

In order to determine total biogenic amines in fermented foods, the combined cross-linked enzyme aggregates of a monoamine oxidase and a putrescine oxidase (combi-CLEAs) and the cross-linked enzyme aggregates (CLEAs) of the fused enzyme of two amine...

  • Article
  • Open Access
22 Citations
5,299 Views
15 Pages

Cancer-Specific Biomarker hNQO1-Activatable Fluorescent Probe for Imaging Cancer Cells In Vitro and In Vivo

  • Surendra Reddy Punganuru,
  • Hanumantha Rao Madala,
  • Viswanath Arutla and
  • Kalkunte S. Srivenugopal

28 November 2018

Human NAD(P)H quinone oxidoreductase-1 (hNQO1) is an important cancer-related biomarker, which shows significant overexpression in malignant cells. Developing an effective method for detecting NQO1 activity with high sensitivity and selectivity in tu...

  • Feature Paper
  • Article
  • Open Access
11 Citations
7,580 Views
10 Pages

An Easy and Reliable Method for the Mitigation of Deuterated Chloroform Decomposition to Stabilise Susceptible NMR Samples

  • Jan Teipel,
  • Vera Gottstein,
  • Eva Hölzle,
  • Katja Kaltenbach,
  • Dirk W. Lachenmeier and
  • Thomas Kuballa

2 August 2022

Highly reactive decomposition products of deuterated chloroform can deteriorate samples dissolved in this commonly used solvent for nuclear magnetic resonance (NMR) spectroscopy. Samples for metabolomics studies often contain a complex mixture of sen...

  • Article
  • Open Access
9 Citations
1,891 Views
19 Pages

Properties of Heat-Assisted pH Shifting and Compounded Chitosan from Insoluble Rice Peptide Precipitate and Its Application in the Curcumin-Loaded Pickering Emulsions

  • Zhenyu Yang,
  • Zhiying Li,
  • Zitong Xu,
  • Zhihao Kong,
  • Xin Qiao,
  • Liwen Zhang,
  • Lei Dai,
  • Yanfei Wang,
  • Qingjie Sun and
  • David Julian McClements
  • + 1 author

6 December 2023

Curcumin exhibits antioxidant and antitumor properties, but its poor chemical stability limits its application. Insoluble peptide precipitates formed by proteolysis of rice glutelin are usually discarded, resulting in resource waste. The coupled trea...

  • Article
  • Open Access
2 Citations
1,661 Views
17 Pages

The Protein Engineering of Zearalenone Hydrolase Results in a Shift in the pH Optimum of the Relative Activity of the Enzyme

  • Anna Dotsenko,
  • Igor Sinelnikov,
  • Ivan Zorov,
  • Yury Denisenko,
  • Aleksandra Rozhkova and
  • Larisa Shcherbakova

13 December 2024

An acidic shift in the pH profile of Clonostachys rosea zearalenone hydrolase (ZHD), the most effective and well-studied zearalenone-specific lactone hydrolase, is required to extend the range of applications for the enzyme as a decontamination agent...

  • Article
  • Open Access
27 Citations
5,037 Views
22 Pages

pH is a central environmental factor influencing CH4 production from organic substrates, as every member of the complex microbial community has specific pH requirements. Here, we show how varying pH conditions (5.0–8.5, phosphate buffered) and...

  • Article
  • Open Access
2 Citations
1,066 Views
15 Pages

Fluorescent proteins (FPs) are widely used as optical probes in molecular and cell biology. tKeima is a tetrameric, large Stokes shift red fluorescent protein and the ancestral protein of mt-Keima, which is widely applied as a pH-sensitive fluorescen...

  • Article
  • Open Access
7 Citations
8,603 Views
17 Pages

22 April 2013

Chemical shifts (CS) of the 1H nucleus in N···H···O type hydrogen bonds (H-bond) were observed in some complexes between chlorophenols [pentachlorophenol (PCP), 2,4,6-tricholorophenol (TCP), 2,6-dichlorophenol (26DCP), 3,5-dichlorophenol (35DCP), an...

  • Article
  • Open Access
4 Citations
2,299 Views
18 Pages

Acidic Shift of Optimum pH of Bovine Serum Amine Oxidase upon Immobilization onto Nanostructured Ferric Tannates

  • Graziano Rilievo,
  • Alessandro Cecconello,
  • Simone Molinari,
  • Andrea Venerando,
  • Lavinia Rutigliano,
  • Gayathri T. Govardhan,
  • Dinusha H. Kariyawasam,
  • Ruth J. Arusei,
  • Lucio Zennaro and
  • Maria L. Di Paolo
  • + 3 authors

12 October 2022

Protein–nanoparticle hybrids represent entities characterized by emerging biological properties that can significantly differ from those of the parent components. Herein, bovine serum amine oxidase (i.e., BSAO) was immobilized onto a magnetic n...

  • Feature Paper
  • Article
  • Open Access
7 Citations
7,927 Views
12 Pages

Integration of a Droplet-Based Microfluidic System and Silicon Nanoribbon FET Sensor

  • Roodabeh Afrasiabi,
  • Lovisa M. Soderberg,
  • Haakan N. Joensson,
  • Per Björk,
  • Helene Andersson Svahn and
  • Jan Linnros

5 August 2016

We present a novel microfluidic system that integrates droplet microfluidics with a silicon nanoribbon field-effect transistor (SiNR FET), and utilize this integrated system to sense differences in pH. The device allows for selective droplet transfer...

  • Article
  • Open Access
19 Citations
6,436 Views
8 Pages

Optimized pH and Its Control Strategy Lead to Enhanced Itaconic Acid Fermentation by Aspergillus terreus on Glucose Substrate

  • Péter Komáromy,
  • Péter Bakonyi,
  • Adrienn Kucska,
  • Gábor Tóth,
  • László Gubicza,
  • Katalin Bélafi-Bakó and
  • Nándor Nemestóthy

Biological itaconic acid production can by catalyzed by Aspergillus terreus (a filamentous fungi) where the fermentation medium pH is of prominent importance. Therefore, in this work, we investigated what benefits the different pH regulation options...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,875 Views
12 Pages

10 May 2023

Afforestation can play a significant role in greenhouse gas emission reduction through increased carbon (C) sequestration in the biomass and soil. However, its environmental effects, especially through changes in soil characteristics as a result of a...

  • Article
  • Open Access
5 Citations
2,708 Views
16 Pages

A Mixed Valence CoIICoIII2 Field-Supported Single Molecule Magnet: Solvent-Dependent Structural Variation

  • Susanta Hazra,
  • Cyril Rajnák,
  • Ján Titiš,
  • M. Fátima C. Guedes da Silva,
  • Roman Boča and
  • Armando J. L. Pombeiro

18 February 2021

One-pot reaction of the Schiff base N,N’-ethylene bis(salicylaldimine) (H2L), CoCl2.6H2O, and [Ph2SnCl2] in acetone produces the mixed valence CoIICoIII2 compound [CoIICoIII2(μ-L)2(Ph)2(μ-Cl)2]·(CH3)2CO·H2O (1). Our recent study already revealed that...

  • Article
  • Open Access
2 Citations
4,861 Views
12 Pages

Single-Crystal 31P and 7Li NMR of the Ionic Conductor LiH2PO4

  • Otto E. O. Zeman,
  • Viktoria Kainz and
  • Thomas Bräuniger

15 April 2020

The electronic surroundings of phosphorus and lithium atoms in the ionic conductor lithium dihydrogen phosphate (LDP) have been studied by single-crystal nuclear magnetic resonance (NMR) spectroscopy at room temperature. From orientation-dependent NM...

  • Article
  • Open Access
396 Views
18 Pages

24 October 2025

Soil microorganisms are crucial regulators of wetland ecological functions and are significantly influenced by plants. However, the ecological patterns underlying soil microbial responses to plants during wetland restoration remain poorly understood....

  • Article
  • Open Access
4 Citations
3,338 Views
23 Pages

Salinity-Induced Cytosolic Alkaline Shifts in Arabidopsis Roots Require the SOS Pathway

  • Belén Rombolá-Caldentey,
  • Zaida Andrés,
  • Rainer Waadt,
  • Francisco J. Quintero,
  • Karin Schumacher and
  • José M. Pardo

10 February 2023

Plants have evolved elaborate mechanisms to sense, respond to and overcome the detrimental effects of high soil salinity. The role of calcium transients in salinity stress signaling is well established, but the physiological significance of concurren...

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