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The self-association properties of partially dephosphorylated bovine beta-casein. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zaman U, Khan SU, Hendi AA, Rehman KU, Badshah S, Refat MS, Alsuhaibani AM, Ullah K, Wahab A. Kinetic and thermodynamic studies of novel acid phosphatase isolated and purified from Carthamus oxyacantha seedlings. Int J Biol Macromol 2022; 224:20-31. [PMID: 36481331 DOI: 10.1016/j.ijbiomac.2022.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/30/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022]
Abstract
Acid phosphatase (ACP) is a key enzyme in the regulation of phosphate feeding in plants. In this study, a new ACP from C. oxyacantha was isolated to homogeneity and biochemically described for the first time. Specific activity (283 nkat/mg) was found after 2573 times purification fold and (17 %) yield. Using SDS-PAGE under denaturing and nondenaturing conditions, ACP was isolated as a monomer with a molecular weight of 36 kDa. LC-MS/MS confirmed the presence of this band, suggesting that C. oxycantha ACP is a monomer. The enzyme could also hydrolyze orthophosphate monoester with an optimal pH of 5.0 and a temperature of 50 °C. Thermodynamic parameters were also determined (Ea, ΔH°, ΔG°, and ΔS°). ACP activity was further studied in the presence of cysteine, DTT, SDS, EDTA, β-ME, Triton-X-100 H2O2, and PMSF. The enzyme had a Km of 0.167 mM and an Ea of 9 kcal/mol for p-nitrophenyl phosphate. The biochemical properties of the C. oxyacantha enzyme distinguish it from other plant acid phosphatases and give a basic understanding of ACP in C. oxyacantha. The results of this investigation also advance our knowledge about the biochemical significance of ACP in C. oxyacantha. Thermal stability over a wide pH and temperature range make it more suitable for use in harsh industrial environments. However, further structural and physiological studies are anticipated to completely comprehend its important aspects in oxyacantha species.
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Affiliation(s)
- Umber Zaman
- Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, Pakistan
| | - Shahid Ullah Khan
- Department of Biochemistry, Women Medical and Dental College, Khyber Medical University KPK, Pakistan; National Key Laboratory of Crops Genetics and Improvement, PR China
| | - Awatif A Hendi
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Khalil Ur Rehman
- Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, Pakistan.
| | - Syed Badshah
- Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, Pakistan
| | - Moamen S Refat
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Amnah Mohammed Alsuhaibani
- Department of Physical Sport Science, College of Education, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Kalim Ullah
- Department of Zoology, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Wahab
- Department of Pharmacy, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
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Sadiq U, Gill H, Chandrapala J. Casein Micelles as an Emerging Delivery System for Bioactive Food Components. Foods 2021; 10:foods10081965. [PMID: 34441743 PMCID: PMC8392355 DOI: 10.3390/foods10081965] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 12/18/2022] Open
Abstract
Bioactive food components have potential health benefits but are highly susceptible for degradation under adverse conditions such as light, pH, temperature and oxygen. Furthermore, they are known to have poor solubilities, low stabilities and low bioavailabilities in the gastrointestinal tract. Hence, technologies that can retain, protect and enable their targeted delivery are significant to the food industry. Amongst these, microencapsulation of bioactives has emerged as a promising technology. The present review evaluates the potential use of casein micelles (CMs) as a bioactive delivery system. The review discusses in depth how physicochemical and techno-functional properties of CMs can be modified by secondary processing parameters in making them a choice for the delivery of food bioactives in functional foods. CMs are an assembly of four types of caseins, (αs1, αs2, β and κ casein) with calcium phosphate. They possess hydrophobic and hydrophilic properties that make them ideal for encapsulation of food bioactives. In addition, CMs have a self-assembling nature to incorporate bioactives, remarkable surface activity to stabilise emulsions and the ability to bind hydrophobic components when heated. Moreover, CMs can act as natural hydrogels to encapsulate minerals, bind with polymers to form nano capsules and possess pH swelling behaviour for targeted and controlled release of bioactives in the GI tract. Although numerous novel advancements of employing CMs as an effective delivery have been reported in recent years, more comprehensive studies are required to increase the understanding of how variation in structural properties of CMs be utilised to deliver bioactives with different physical, chemical and structural properties.
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A novel acid phosphatase from cactus (Opuntia megacantha Salm-Dyck) cladodes: Purification and biochemical characterization of the enzyme. Int J Biol Macromol 2020; 160:991-999. [DOI: 10.1016/j.ijbiomac.2020.05.175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/15/2020] [Accepted: 05/21/2020] [Indexed: 12/19/2022]
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Zaman U, Naz R, Rehman KU, Saeed Khattak N, Ahmad S, Iqbal A, Jan SU. Investigating the Impact of Various Parameters On the Activity of Acid Phosphatases from Seedlings of Coronopus didymus. J Proteome Res 2020; 19:3201-3210. [PMID: 32551656 DOI: 10.1021/acs.jproteome.0c00174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The thermal stability of purified acid phosphatase from the germinating seedlings of Coronopus didymus (Jangli halon) was investigated by studying the impact of various thermodynamic parameters [t1/2, Ed, ΔH° (enthalpy change), ΔG° (free energy change), and ΔS° (entropy change)] of heat treatment in the temperature range of 55-75 °C. The thermal denaturation of acid phosphatase, assessed by loss in activity, was evidently followed by first-order kinetics, which varies with time and yield during the process of denaturation. The half-life of the enzyme was 693 min at 55 °C. The Ed (activation energy of denaturation) was calculated by the Arrhenius plot (30 kcal mol-1), and the Z-value was 17.3 °C. The various thermodynamic parameters studied were as follows: ΔH°, the change in enthalpy of inactivation, was 121.93 kJ mol-1 at 55 °C; ΔG°, the change in free energy of inactivation, was 110.65 kJ mol-1 at 55 °C; and ΔS°, the change in entropy of inactivation, was 34.39 J mol-1 k-1 at 55 °C. This suggests that acid phosphatase activity is thermostable to long heat treatment up to 60 °C.
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Affiliation(s)
- Umber Zaman
- Department of Chemistry, Gomal University, Dera Ismail Khan 29050, Pakistan
| | - Rubina Naz
- Department of Chemistry, Gomal University, Dera Ismail Khan 29050, Pakistan
| | - Khalil Ur Rehman
- Department of Chemistry, Gomal University, Dera Ismail Khan 29050, Pakistan
| | - Noor Saeed Khattak
- Centre for Materials Science, Islamia College University, Peshawar 25120, Pakistan
| | - Safeer Ahmad
- Centre for Materials Science, Islamia College University, Peshawar 25120, Pakistan
| | - Anwar Iqbal
- Department of Chemistry, Gomal University, Dera Ismail Khan 29050, Pakistan
| | - Saeed Ullah Jan
- Centre for Materials Science, Islamia College University, Peshawar 25120, Pakistan
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Membrane-based fractionation, enzymatic dephosphorylation, and gastrointestinal digestibility of β-casein enriched serum protein ingredients. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.09.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Tagad CK, Sabharwal SG. Purification and characterization of acid phosphatase from Macrotyloma uiflorum seeds. Journal of Food Science and Technology 2017; 55:313-320. [PMID: 29358824 DOI: 10.1007/s13197-017-2941-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/10/2017] [Accepted: 10/19/2017] [Indexed: 10/18/2022]
Abstract
Acid phosphatases play a crucial role in food processing industries to reduce phosphate content of food. Here in acid phosphatase from the seeds of Macrotyloma uniflorum has been purified to homogeneity using UNOsphere-S cation exchange chromatography followed by gel filtration with 81.85 fold purification. Molecular weight of purified enzyme was 55,000 (± 1040) Daltons under physiological conditions. It was a heterodimer of subunits having molecular weights 27,093 and 28,241 Daltons as determined by MALDI-TOF analysis. The optimum pH and temperature for the purified enzyme was 5.0 and 50 °C respectively. The enzyme was stable in the pH range 3.5-5.5 and showed temperature stability up to 60 °C. Substrate specificity of enzyme was checked with different substrates namely, p-nitrophenyl phosphate (p-NPP), ATP, ADP, glucose 6-phosphate, glucose-1-phosphate, fructose 6-phosphate, phenyl phosphate, α-naphthyl-phosphate, pyridoxyl phosphate and β-glycerophosphate. Enzyme showed high substrate specificity towards p-NPP, phenyl phosphate, ATP and α-naphthyl phosphate. Km and Vmax of enzyme were found to be 0.934 mM and 1.333 mM/min respectively with respect to p-NPP as a substrate. Chemical modification studies showed that tryptophan was present at the active site of the enzyme.
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Affiliation(s)
- Chandrakant K Tagad
- 1Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007 India.,2Centre for Sensor Studies, Savitribai Phule Pune University, Pune, 411007 India.,MIT School of Bioengineering Sciences and Research, MIT ADT University, Pune, 412201 India
| | - Sushma G Sabharwal
- 1Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune, 411007 India
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Liu D, Wang Y, Yu Y, Hu J, Lu N, Regenstein JM, Wang M, Zhou P. Effects of enzymatic dephosphorylation on infant in vitro gastrointestinal digestibility of milk protein concentrate. Food Chem 2016; 197:891-9. [DOI: 10.1016/j.foodchem.2015.11.074] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 11/13/2015] [Accepted: 11/13/2015] [Indexed: 11/27/2022]
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Broyard C, Gaucheron F. Modifications of structures and functions of caseins: a scientific and technological challenge. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s13594-015-0220-y] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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McCarthy NA, Kelly AL, O’Mahony JA, Fenelon MA. The physical characteristics and emulsification properties of partially dephosphorylated bovine β-casein. Food Chem 2013; 138:1304-11. [DOI: 10.1016/j.foodchem.2012.11.080] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 11/09/2012] [Accepted: 11/12/2012] [Indexed: 10/27/2022]
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Chang YW, Alli I, Konishi Y, Ziomek E. Characterization of protein fractions from chickpea (Cicer arietinum L.) and oat (Avena sativa L.) seeds using proteomic techniques. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hiller B, Lorenzen PC. Effect of phosphatase/transglutaminase treatment on molar mass distribution and techno-functional properties of sodium caseinate. Lebensm Wiss Technol 2009. [DOI: 10.1016/j.lwt.2008.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Salami M, Yousefi R, Ehsani MR, Dalgalarrondo M, Chobert JM, Haertlé T, Razavi SH, Saboury AA, Niasari-Naslaji A, Moosavi-Movahedi AA. Kinetic characterization of hydrolysis of camel and bovine milk proteins by pancreatic enzymes. Int Dairy J 2008. [DOI: 10.1016/j.idairyj.2008.06.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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