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Metabolomics for quality assessment of poultry meat and eggs

Food Quality and Safety 2024年第1期8卷 27-40页

作者： M.S.Yogeswari Jinap Selamat Nuzul Noorahya Jambari Alf Khatib mohd hishammfariz mohd amin Suganya Murugesu Laboratory of Food Safety and Food Integrity Institute of Tropical Agriculture and Food SecurityUniversiti Putra MalaysiaSerdangSelangor Darul EhsanMalaysia Department of Food Science Faculty of Food Science and TechnologyUniversiti Putra MalaysiaSerdangSelangor Darul EhsanMalaysia Department of Pharmaceutical Chemistry Kulliyyah of PharmacyInternational Islamic University MalaysiaKuantanPahang Darul MakmurMalaysia Faculty of Pharmacy Airlangga UniversitySurabayaIndonesia Department of Veterinary Service Malaysia Federal Government Administration CentrePutrajayaMalaysia

The poultry industry is experiencing rapid growth *** accelerated growth has led to multiple food fraud incidents across the food supply chain,which consequently created a demand for precise determination of quality poultry *** increase in demand for precise poultry production quality has necessitated advanced *** has emerged as a viable solution by offering detailed differentiation of biochemical indicators throughout the poultry supply ***,this study provides a means to address risk factors affecting the poultry industry without compromising animal welfare,which is a critical *** review focuses on important issues related to poultry product quality *** adulteration has escalated in recent years as it is driven by the increasing focus on consuming high-quality and nutritious ***,there is no specifc guideline for such determinations,especially when appearance,texture,and taste can be manipulated by substituting for food *** can pave the way for a deeper understanding of existing and novel biochemical indicators responsible for determining the quality of poultry meat and *** approach holds the potential to enhance the overall quality of poultry meat and egg products while also preventing food fraud.

关键词： Poultry metabolomics welfare application authentication.

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Epidemiological observations of invasive group B Streptococcus infections in six major hospitals in Peninsular Malaysia

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Asian Pacific Journal of Tropical Medicine 2024年第9期17卷 384-391页

作者： AbdulRahman Muthanna mohd Nasir mohd Desa Nurul Asyikin Abdul Rahman Nurul Diana Dzaraly Nurul Hana Zainal Baharin Nur Afiza Aziz Chua Hui Shan Zalina Ismail Lailatul Akmar Mat Nor Marlindawati mohd Ali Nur Hanani Ahmad Mohammad Noor Amal Azmai Syafinaz amin-Nordin Department of Biomedical Sciences Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia School of Biology Faculty of Applied SciencesUniversiti Teknologi MARANegeri Sembilan72000 Kuala PilahMalaysia Department of Oral Biology&Biomedical Sciences Faculty of DentistryMAHSA University42610 JenjaromSelangorMalaysia School of Bioscience Faculty of Pharmacy and Biomedical SciencesMAHSA University42610 JenjaromSelangorMalaysia Department of Pathology Sultanah Aminah Hospital80100 Johor BahruJohorMalaysia Department of Pathology Melaka General Hospital75400 MelakaMalaysia Department of Medical Microbiology and Immunology Faculty of MedicineUniversiti Kebangsaan Malaysia56000 CherasKuala LumpurMalaysia Department of Pathology Sultan Idris Shah Serdang Hospital43000 KajangSelangorMalaysia Department of Pathology Tuanku Ja'afar Hospital70300 SerembanNegeri SembilanMalaysia Department of Pathology Sungai Buloh Hospital47000 Sungai BulohSelangorMalaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Aquatic Animal Health and Therapeutics Laboratory Institute of BioscienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Sultan Abdul Aziz Shah HospitalUniversiti Putra MalaysiaPersiaran MARDI-UPM43400SelangorMalaysia

Objective:To address the lack of research on invasive group B Streptococcus(GBS)infections in Malaysia and Southeast Asia through a comprehensive analysis of GBS isolates obtained from ***:Medical records from patients with GBS infection isolated from the sterile site,such as blood and cerebrospinal fluid from 14 July 2019 to 15 December 2020,were reviewed from six major hospitals in Peninsular *** criteria were invasive GBS,sterile sites and non-repeated GBS isolated from the same patients in the same *** isolates were re-identified for GBS and ***:A total of 118 patients were eligible,with a majority of non-pregnant adults(76.3%).Over half of the patients(62.7%)had underlying medical conditions,with diabetes as the most common disease,followed by respiratory disease,renal disease,cardiovascular disease and skin and soft tissue *** most common manifestations were sepsis,followed by soft tissue abscess,diabetic foot ulcer,wet gangrene and *** overall mortality was 7.6%.The most common serotype was serotype桋.Conclusions:Invasive GBS infection among non-pregnant adults showed a rising trend,particularly among diabetic *** study underscores the importance of reducing risk factors and highlights the necessity of developing GBS vaccination as a preventive strategy for both infants and adults.

关键词： Streptococcus agalactiae Group B Streptococcus Invasive GBS infections Malaysia

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A computing capability test for a switched system control design using the Haris-Rogers method

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Journal of Zhejiang University-Science C(Computers and Electronics) 2012年第10期13卷 781-792页

作者： mohd amin AT-TASNEEM Sallehuddin Mohamed HARIS Zulkifli mohd NOPIAH Faculty of Mechanical Engineering University Malaysia Pahang Pekan 26600 Malaysia Department of Mechanical and Materials Engineering Faculty of Engineering and the Built Environment Universiti Kebangsaan Malaysia UKM Bangi 43600 Malaysia Unit of Fundamental Engineering Studies Faculty of Engineering and the Built Environment Universiti Kebangsaan Malaysia UKM Bangi 43600 Malaysia

The problem of finding stabilizing controllers for switched systems is an area of much research interest as conventional concepts from continuous time and discrete event dynamics do not hold true for these *** solutions have been proposed,most of which are based on finding the existence of a common Lyapunov function(CLF) or a multiple Lyapunov function(MLF) where the key is to formulate the problem into a set of linear matrix inequalities(LMIs).An alternative method for finding the existence of a CLF by solving two sets of linear inequalities(LIs) has previously been *** method is seen to be less computationally taxing compared to methods based on solving *** substantiate this,the computational ability of three numerical computational solvers,LMI solver,cvx,and Yalmip,as well as the symbolic computational program Maple were tested.A specific switched system comprising four second-order subsystems was used as a test *** the obtained solutions,the validity of the controllers and the corresponding CLF was *** was found that all tested solvers were able to correctly solve the *** issue of rounding-off error in numerical computation based software is discussed in *** test revealed that the guarantee of stability became uncertain when the rounding off was at a different decimal *** use of different external solvers led to the same conclusion in terms of the stability of switched *** a result,a shift from using a conventional numerical computation based program to using computer algebra is suggested.

关键词： Linear inequalities Hybrid systems Stability Common quadratic Lyapunov function Numerical computation Symbolic computation

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Leaf chlorophyll and nitrogen dynamics and their relationship to lowland rice yield for site-specific paddy management

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Information Processing in Agriculture 2017年第4期4卷 259-268页

作者： Asa Gholizadeh Mohammadmehdi Saberioon Lubos Boruvka Aimrun Wayayok mohd amin mohd Soom Department of Soil Science and Soil Protection Faculty of AgrobiologyFood and Natural ResourcesCzech University of Life Sciences PraguePragueCzech Republic Laboratory of Signal and Image Processing Institute of Complex SystemsSouth Bohemia Research Centre of Aquaculture and Biodiversity of HydrocenosesFaculty of Fisheries and Protection of WatersUniversity of South Bohemia in Ceske BudejoviceNove HradyCzech Republic Department of Biological and Agricultural Engineering Faculty of EngineeringUniversity Putra MalaysiaSelangorMalaysia Faculty of Sustainable Agriculture University Malaysia SabahSandakanMalaysia

The optimum rate and application timing of Nitrogen(N)fertilizer are crucial in achieving a high yield in rice cultivation;however,conventional laboratory testing of plant nutrients is time-consuming and *** develop a site-specific spatial variable rate application method to overcome the limitations of traditional techniques,especially in fields under a double-cropping system,this study focused on the relationship between Soil Plant Analysis Development(SPAD)chlorophyll meter readings and N content in leaves during different growth stages to introduce the most suitable stage for assessment of crop N and prediction of rice *** SPAD readings and leaf N content were measured on the uppermost fully expanded leaf at panicle formation and booting *** yield was also measured at the end of the *** analysis of variance,variogram,and kriging were calculated to determine the variability of attributes and their relationship,and finally,variability maps were *** linear relationships were observed between attributes,with the same trends in different sampling dates;however,accuracy of semivariance estimation reduces with the growth *** of the study also implied that there was a better relationship between rice leaf N content(R^2=0.93),as well as yield(R2=0.81),with SPAD readings at the panicle formation ***,the SPAD-based evaluation of N status and prediction of rice yield is more reliable on this stage rather than at the booting *** study proved that the application of SPAD chlorophyll meter paves the way for real-time paddy N management and grain yield *** can be reliably exploited in precision agriculture of paddy fields under double-cropping cultivation to understand and control spatial variations.

关键词： Spatial variability Non-invasive measurement Precision farming Decision support

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Estimating Glycemic Index of Rice-Based Mixed Meals by Using Predicted and Adjusted Formulae

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Rice science 2017年第5期24卷 274-282页

作者： Nur Maziah Hanum OSMAN Barakatun-Nisak mohd-YUSOF amin ISMAIL Department of Nutrition and Dietetics Faculty of Medicine and Health Sciences Universiti Putra Malaysia Serdang 43400Selangor Malaysia Research Centre of Excellent for Nutrition and Non-communicable Diseases Faculty of Medicine and Health Sciences Universiti Putra Malaysia Serdang 43400 Selangor Malaysia

The estimation of glycemic index(GI) of rice-based mixed meal either by using predicted GI(GI_(pred)) or adjusted GI(GI_(adj)) formula is *** study aimed to determine the glycemic response of rice in rice alone or mixed meals and to identify the appropriate formula for estimating the GI of rice-based mixed *** glycemic responses produced by the rice alone(red rice,fragrant white rice or parboiled rice) and the rice-based mixed meals(fried red rice,fried fragrant white rice or fried parboiled rice) which provided 25 g available carbohydrate were assessed in 11 healthy *** determine the measured GI(GImeasured) of rice alone and rice-based mixed meals,participants underwent three repeated tests of a reference food(Glucolin~?).Tests were performed in random order on nine separate visits after an overnight fasting for at least 8 *** glucose at baseline(0 min),15,30,45,60,90 and 120 min from starting the meals was assessed and used to determine the incremental area under the curve(iAUC_(120)).The agreement between GImeasured and the estimation formulae(GI_(pred) or GI_(adj)) were determined using Bland-Altman *** iAUC_(120) after consuming rice alone was significantly higher than the rice-based mixed meals except for fried fragrant rice,which was comparable to the rice alone(P > 0.05).The GI_(measured) values of rice were categorized as medium(61 for parboiled rice,67 for fragrant white rice,and 68 for red rice).GI_(pred)(r = 0.40,P < 0.01) and GI_(adj)(r = 0.41,P < 0.01) were significantly correlated with iAUC_(120).The agreement between GI_(measured) and GI_(adj) is apparent suggesting the usefulness of GI_(adj) in estimating meal GI of rice-based mixed meals.

关键词： glycemic index mixed meal glycemic response rice

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Optimization of equitable irrigation water delivery for a large-scale rice irrigation scheme

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International Journal of Agricultural and Biological Engineering 2018年第5期11卷 160-166页

作者： Md Rowshon Kamal Muhammad Iqbal Md Abdul Mojid mohd amin mohd Soom Lai Sai Hin Department of Biological and Agricultural Engineering Faculty of EngineeringUniversiti Putra Malaysia(UPM)UPM Serdang 43400Selangor DEMalaysia Department of Agricultural Engineering and Technology Faculty of Agricultural SciencesGhazi UniversityDera Ghazi KhanPakistan Department of Irrigation and Water Management Faculty of Agricultural Engineering and TechnologyBangladesh Agricultural UniversityMymensingh 2202Bangladesh Faculty of Sustainable Agriculture Universiti Malaysia Sabah(UMS)Jalan UMSKota Kinabalu 88400SabahMalaysia Department of Civil Engineering Faculty of EngineeringUniversity of MalayaKuala Lumpur 50603Malaysia

Equitable water allocation is essential in an irrigation scheme for obtaining potential crop yields from the entire scheme,especially when water supply is *** optimization model achieved this goal by coupling an optimal water allocation model with available water supply and irrigation water demand for a river-fed rice irrigation system in *** model consists of a paddy field water balance module and an optimization *** outputs from the module are daily irrigation demand and surface runoff,if there is *** optimization module consists of an objective function,which minimizes water shortage across the scheme area while maintaining equity in water *** model performs optimization subject to several system constraints,and the decision variable of the model is daily releases or supply to the tertiary *** of this model remained unaffected under different water supply conditions,and the optimization model reliably examined the effects of alternate water allocation and management rules with field *** improves efficiency and equity in water allocation with respect to crop growth stages and water shortages rather than simply cutting irrigation supply on a proportional basis to overcome water shortages.

关键词： irrigation optimization simulation equitable deliveries rice

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Antioxidant compounds and capacities of Gac (Momordica cochinchinensis Spreng) fruits

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Asian Pacific Journal of Tropical Biomedicine 2019年第4期9卷 158-167页

作者： Ali Abdulqader Faisal Ali amin Ismail Norhaizan mohd Esa Department of Nutrition and Dietetics Faculty of Medicine and Health Sciences Universiti Putra Malaysia Biochemistry & Molecular Biology Department University Hospital Faculty of Medicine and Health Sciences Sana'a University Research Center of Excellent Non-Communicable Diseases (NNCD) Faculty of Medicine and Health Sciences Universiti Putra Malaysia Laboratory of Molecular Biomedicine Institute of Bioscience Universiti Putra Malaysia

Objective: To identify and determine the composition of antioxidant compounds, and to evaluate the antioxidant abilities of Gac fruit parts(peel, pulp, seed and aril) grown in Malaysia. Methods: LC-MS/MS was used for identification of antioxidant compounds and UV-Vis for estimation of the contents of phenolics, flavonoids, and carotenoids. Lycopene and β-carotene were quantified using high-performance liquid chromatography. DPPH(2, 2-diphenyl-1-picrylhydrazyl) and ferric reducing antioxidant power assays were employed to evaluate antioxidant capacities. Results: Phytochemicals were found amongst all the fruit parts. Notably, significant amounts of carotenoids [(107.4 ± 4.5),(85.7 ± 4.4),(110.6 ± 2.1) mg/100 g dry weight(DW)], and relatively high levels of both phenolics [(27.3 ± 1.7),(28.9 ± 2.4),(30.8 ± 2.7) mg/100 g DW] and flavonoids [(38.1 ± 2.2),(8.8 ± 1.3),(24.5 ± 3.3) mg/100 g DW] were found in the fruit's peel, pulp and aril, respectively. Seed part also showed a relatively high level of flavonoids [(18.1 ± 2.3) mg/100 g DW]. Lycopene and β-carotene were found to be significantly high(P < 0.05) in aril [(579.3 ± 22.7) and(621.0 ± 35.0) μg/g DW], followed by peel [(51.0 ± 7.5) and(210.0 ± 12.5) μg/g DW] and pulp [(37.6 ± 10.9) and(205.6 ± 22.1) μg/g DW)]. Antioxidant assays revealed that aril possessed the highest scavenging activity(IC_(50) = 865 μg/mL), while the peel possessed the highest ferric reducing power of 140 μmol FeSO4/μg. Conclusions: The current results demonstrate that Gac fruit grown in Malaysia is a rich source of phytochemicals, especially carotenoids, and possesses antioxidant activities. Thus, such findings suggest Gac fruit as a source of an antioxidant plant.

关键词： Momordica cochinchinensis Phytochemicals Carotenoids Antioxidants Polyphenols High-performance liquid chromatography

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Disease burden,antimicrobial resistance and molecular characterization of invasive group B Streptococcus among non-pregnant adults in Malaysia:A protocol study

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Asian Pacific Journal of Tropical Medicine 2023年第11期16卷 498-505页

作者： Abdulrahman Muthanna Nurul Hana Zainal Baharin mohd Nasir mohd Desa Nurul Diana Dzaraly Mohammad Noor Amal Azmai Syafinaz amin-Nordin Department of Biomedical Sciences Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Aquatic Animal Health and Therapeutics Laboratory Institute of BioscienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Sultan Abdul Aziz Shah HospitalUniversiti Putra MalaysiaPersiaran MARDI-UPM43400SelangorMalaysia Laboratory of Vaccine and Biomolecules Institute of BioscienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia

and pili genes are also ***:This multicentre,prospective,observational study is conducted in seven major tertiary hospitals in Malaysia among non-pregnant ***,a retrospective study is conducted in the selected hospitals with similar *** isolates are subjected to phenotyping,serotyping by multiplex PCR,antimicrobial susceptibility testing and PCR-detection of GBS virulence and pilus *** housekeeping genes are amplified and sequenced for multi-locus sequence ***:Findings from the study may contribute to the management of clinical practice to diagnose and prevent GBS related diseases in a timely *** use of antibiotics is encouraged by monitoring antimicrobial resistance.

关键词： Group B Streptococcus Incidence Serotype Antimicrobial resistance Virulence gene Multi-locus sequence typing

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Gac fruit extracts ameliorate proliferation and modulate angiogenic markers of human retinal pigment epithelial cells under high glucose conditions

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Asian Pacific Journal of Tropical Biomedicine 2018年第12期8卷 571-579页

作者： Ali Abdulqader Faisal Ali amin Ismail Norhaizan mohd Esa]1,3,4] Department of Nutrition and Dietetics Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Biochemistry & Molecular Biology Department University HospitalFaculty of Medicine and Health SciencesSana’a UniversityYemen Research Center of Excellent Non-Communicable Diseases (NNCD) Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400SerdangSelangorMalaysia Laboratory of Molecular Biomedicine Institute of BioscienceUniversiti Putra Malaysia43400erdangMalaysia

Objective: To investigate the impact of the extracts of Gac fruit parts(peel, pulp, seed, and aril) on the cell viability and angiogenesis markers of human retinal pigment epithelial(ARPE-19) cells under high glucose conditions. Methods: The effect of the extracts of Gac fruit peel, pulp, seed and aril on the ARPE-19 cells was determined using MTT viability assay, Trypan blue dye and morphological changes were observed using light microscopy. Enzyme-linked immunosorbent-based assay was performed to evaluate the effect of Gac fruit parts on the reactive oxygen species(ROS), vascular endothelial growth factor(VEGF) and pigmented epithelium-derived factor(PEDF) secretions. Results: High glucose(HG) at 30 mmol/L increased ARPE-19 cell viability and ROS and VEGF secretions. While, the exposure of ARPE-19 cells in high glucose condition to Gac fruit extracts led to inhibition of cell viability, induced morphological changes, decreased ROS and VEGF secretions, and increased PEDF level. Gac pulp, seed, and aril at 1 000 μg/mL showed significant inhibition activities [(7.5 ± 5.1)%,(2.7 ± 0.5)%,(3.2 ± 1.1)%, respectively] against HG-induced ARPE-19 cell viability. The findings also demonstrated that Gac aril at 250 μg/mL significantly decreased ROS and VEGF levels [(40.6 ± 3.3) pg/mL,(107.4 ± 48.3) pg/mL, respectively] compared to ROS [(71.7 ± 2.9) pg/mL ] and VEGF [(606.9 ± 81.1) pg/mL] in HG untreated cells. Moreover, 250 μg/mL of Gac peel dramatically increased PEDF level [(18.2 ± 0.3) ng/mL] compared to that in HG untreated cells [(0.48 ± 0.39) ng/mL]. Conclusions: This study indicates that the extracts of Gac peel, pulp, seed and aril reduced cell viability, minimized ROS generations and showed angiogenic activities. Therefore, our findings open new insights into the potentiality of Gac fruit against HG-related diabetic retinopathy disease.

关键词： Gac(Momordica cochinchinensis Spreng) High glucose Angiogenesis Human retinal pigment epithelial cells Proliferative diabetic retinopathy

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A mixed acid methodology to produce thermally stable cellulose nanocrystal at high yield using phosphoric acid

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Journal of Bioresources and Bioproducts 2022年第2期7卷 17-26页

作者： Khairatun Najwa mohd amin Alireza Hosseinmardi Darren J.Martin Pratheep K.Annamalai Australian Institute for Bioengineering and Nanotechnology(AIBN) the University of QueenslandBrisbaneQLD 4072 Australia Faculty of Chemical and Process Engineering Technology College of Engineering TechnologyUniversiti Malaysia PahangLebuhraya Tun Razak26300 Gambang KuantanPahang D.M.Malaysia

Cellulose nanocrystal(CNC)with distinctive shape-morphology,enhanced thermal stability and dispersibility is essential for overcoming the challenges in processing polymer/CNC nanocom-posites through melt compounding at elevated *** study shows a mixed acid hy-drolysis method to produce CNC with improved thermal stability and high *** use of phosphoric acid(H_(3)PO_(4)),as a mild acid,in combination with a strong acid either sulphuric acid(H_(2)SO_(4))or hydrochloric acid(HCl)leads to reduced use of strong acids and low impact on our *** influences of acid combination and sequence of addition on the production yield were investigated by retaining the proportion of H_(3)PO_(4)to corrosive acid(H_(2)SO_(4)and HCl)4 to 1,and solid to liquid ratio 1꞉*** methodology has enabled to isolate CNC with higher thermal stability,dispersibility and productivity in terms of amount acid used 1 g of CNC,as compared with single acid *** CNC produced using the combination of H_(3)PO_(4)and HCl exhibits high thermal stability,dispersibility and rod-like shape morphology with length and width of(424±86)and(22±3)nm,***,this approach has reduced H_(3)PO_(4)consumption by 54%as compared with single acid hydrolysis method for the production of same amount of CNC.

关键词： Cellulose nanocrystal(CNC) Acid hydrolysis Thermal stability Mixed acid Crystallinity Production yield

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