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Metabolomics for quality assessment of poultry meat and eggs

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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.

Torsional behavior of triangular web profile （TRIWP） steel section by experimental study

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Frontiers of Structural and Civil Engineering 2016年第4期10卷 409-419页

作者： fatimah DE'NAN Hazwani HASAN mohd Hanim OSMAN Sariffudin SAAD School of Civil Engineering Engineering Campus Universiti Sains Malaysia Pulau Pinang 14300 Malaysia Faculty of Civil Engineering Universiti Teknologi Malaysia Skudai Johor 8131 O Malaysia

A triangular web profile （TriWP） is a modified section where the flanges are connected to a web plate of triangular profile. This study examined the torsional behavior of TriWP steel sections and compared to that of the fiat web （FW） steel sections. Three types of specimen sizes were used： 180 mmx 75 mm × 5 mm× 2 mm, 200 mm × 100 mm× 8 mm ×6 mm, and 200 mm× 100 mm × 6 mm× 5 mm. All the specimens were loaded vertically until the maximum load was achieved and then the load was released. For both types of specimens, it was observed that the torsional rotation for bigger size [200 mm× 100 mm× 8 mm × 6 mm] were smaller than that of smaller size [ 180 mm × 75 mm×5 mm× 2 mm] of the specimens. At the maximum torsional loading, the experimental result was compared to the theoretical calculation. The comparison showed that the percentage difference ranged from 1.10% to 16.80%. From the graph of torsional load versus rotational angle, the torsional rotation for all TriWP steel sections were smaller than that of the FW steel section under the same torsional loading i.e., 0.2 kNm and 1 kNm. The range between FW and TriWP were 3.74 to 71.83 at 0.2 kNm while 14.5 to 75.1 at 1.0 kNm. The findings were shown that the TriWP steel sections had better resistance against torsion in comparison to FW steel section.

关键词： corrugated web i-beam non uniform steel section torsion resistance torsion angle triangular web profile steel section

Observed Trends in Extreme Temperature over the Klang Valley, Malaysia

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Advances in Atmospheric Sciences 2019年第12期36卷 1355-1370页

作者： Ahmad Norazhar mohd YATIM mohd Talib LATIF fatimah AHAMAD Md Firoz KHAN mohd Shahrul mohd NADZIR Liew JUNENG Space Science Centre Institute of Climate ChangeUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Faculty of Science and Natural Resources Universiti Malaysia Sabah88400 Kota KinabaluSabahMalaysia School of Environmental and Natural Resource Sciences Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Centre for Tropical Climate Change System Institute of Climate ChangeUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Department of Chemistry Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia

This study investigates the recent extreme temperature trends across 19 stations in the Klang Valley, Malaysia, over the period 2006^-16. Fourteen extreme index trends were analyzed using the Mann-Kendall non-parametric test, with Sen’s slope as a magnitude estimator. Generally, the annual daily mean temperature, daily mean maximum temperature, and daily mean minimum temperature in the Klang Valley increased significantly, by 0.07°C yr^-1, 0.07°C yr^-1 and 0.08°C yr^-1, respectively. For the warm temperature indices, the results indicated a significant upward trend for the annual maximum of maximum temperature, by 0.09°C yr^-1, and the annual maximum of minimum temperature, by 0.11°C yr^-1. The results for the total number of warm days and warm nights showed significant increasing trends of 5.02 d yr^-1 and 6.92 d yr^-1, respectively. For the cold temperature indices, there were upward trends for the annual minimum of maximum temperature, by 0.09°C yr^-1, and the annual minimum of minimum temperature, by 0.03°C yr^-1, concurrent with the decreases in the total number cold days (TX10P), with -3.80 d yr^-1, and cold nights (TN10P), with -4.33 d yr^-1. The 34°C and 37°C summer days results showed significant upward trends of 4.10 d yr^-1 and 0.25 d yr^-1, respectively. Overall, these findings showed upward warming trends in the Klang Valley, with the minimum temperature rate increasing more than that of the maximum temperature, especially in urban areas.

关键词： climate change extreme temperature trend urban environment tropical area

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

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

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

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

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

A Literature Review on Sustainability of Bio-Based and Biodegradable Plastics:Challenges and Opportunities

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Energy Engineering 2022年第4期119卷 1611-1647页

作者： Taofeeq D.Moshood Gusman Nawanir fatimah Mahmud Fazeeda Mohamad mohd Hanafiah Ahmad Airin AbdulGhani Faculty of Industrial Management Universiti Malaysia PahangMalaysia

This study examines the literature on bio-based and biodegradable plastics published between 2000 and 2021 and provides insights and research suggestions for the *** study gathers data from the Scopus and ISI Web of Science databases,then picks 1042 publications objectively and analyses their ***,144 papers from the Web of Science are analysed to present insights and classifications of the literature based on content analyses,including assessment/evaluation of the sustainability of bio-based and biodegradable Plastics,sustainability of biodegradable Plastics,and factors driving the uptake of biodegradable *** study finds that most research on bio-based and biodegradable plastic film evaluations considered only one dimension of sustainability,few considered two dimensions,and very few considered three ***,in recent years,academic and industrial interest has grown dramatically in biodegradable plastics towards *** triple bottom line method in this report(economic benefit,social responsibility,and environmental protection)was employed to assess the biodegradable plastics towards *** journals,Influential authors,top contributing institutions,top contributing nations,and contributions by fields are all identified in this *** research gives a detailed but straightforward theoretical design of bio-based and biodegradable *** study’s results and future research initiatives provide a new path for further investigation and contribution to the field.

关键词： Biodegradable plastic bioplastic influential factors life cycle assessment biopolymers triple bottom line(TBL)