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Fulltext Effect of edible coating of sago starch-gelatine incorporated with papaya seed extract on the storage stability of Malaysian fish sausage (keropok lekor)

Bakar, J., Abdul Kadir, N. S., Ahmad Mazlan, A. S., Ismail Fitry, M. R.

International Food Research Journal, 2020;27(4):618-624.
MyJurnal

The quality change of fish sausage (keropok lekor) coated in sago starch-gelatine coating with
papaya seed extract (PSE) during chill storage (7°C) was determined. During storage, pH,
thiobarbituric acid value (TBA), colour, moisture, and the total plate count were evaluated. pH
of samples significantly dropped (p < 0.05) during storage, and the highest decrease was in
control sample. The moisture content in control sample had an increasing trend while that of
samples with 5 and 7% PSE coatings significantly decreased, and only a slight change for
samples with 0% PSE coating. All samples had significant increase in their TBA values during
storage. The presence of the coating provided a positive effect on the colour of the fish sausages since no significant colour changes were observed during storage. TPC of control and
coated sausage in 0, 5, and 7% PSE exceeded the recommended microbial standard after 2, 6,
8, and 4 d of storage, respectively. Overall, coating with 5% of PSE was the most effective in
retarding the quality deterioration of the fish sausages.
Fulltext Review of development survey of phase change material models in building applications

Akeiber HJ, Wahid MA, Hussen HM, Mohammad AT

ScientificWorldJournal, 2014;2014:391690.
PMID: 25313367 DOI: 10.1155/2014/391690

The application of phase change materials (PCMs) in green buildings has been increasing rapidly. PCM applications in green buildings include several development models. This paper briefly surveys the recent research and development activities of PCM technology in building applications. Firstly, a basic description of phase change and their principles is provided; the classification and applications of PCMs are also included. Secondly, PCM models in buildings are reviewed and discussed according to the wall, roof, floor, and cooling systems. Finally, conclusions are presented based on the collected data.
Effects of acclimation temperatures on the respiration physiology and thermal coefficient of Malabar blood snapper

Mazumder SK, Ghaffar MA, Tomiyama T, Das SK

Respir Physiol Neurobiol, 2019 10;268:103253.
PMID: 31301383 DOI: 10.1016/j.resp.2019.103253

This study tested the oxygen consumption rates (OCR), energy, and thermal coefficient of juvenile Lutjanus malabaricus (60 fish, size: 4.53 ± 1.14 g) at four temperatures of 22, 26, 30 and 34 °C. During 30 days of experimental period 5 fish tank-1 were reared at four temperatures with three replicates in intermittent flow respirometers in a recirculatory system under laboratory conditions. As expected, oxygen consumption rates increased significantly (P 
Fulltext Economic evaluation of type 2 diabetes management at the Malaysian Ministry of Health primary care clinics, in Machang, Kelantan

Rohana, D., Wan Norlida, W.l., Nor Azwany, Y., Mazlan, A., Zawiyah, D., Che Karrialudin, C.A., et al.

Malaysian Journal of Public Health Medicine, 2007;7(1):5-13.
MyJurnal

Public health care programme evaluation includes determining the programme effectiveness (outcome assessment), efficiency (economic evaluation), accessibility (reachability of services) and equity (equal provision for equal needs). The purpose of this study was to make comparison on cost·( efficiency and costeffectiveness in managing type 2 diabetes between the Ministry of Health (MOH) health clinics with family medicine specialist (FMS) and health clinics without FMS. A costeffectiveness analysis was conducted alongside across-sectional study at two government health clinics in Machang, Kelantan, one with FMS and the other without FMS. A total of 300 patients, of which 155 from the health clinic without FMS and 145 from the other group were evaluated for sociodemographic and clinical characteristics from August 2005 to May 2006. HbA1c
analysis was measured for each patient during the study period. Macrocosting and microcosting were used to determine costs. The provider cost for diabetic management ranged from RM270.56 to RM4533.04 per diabetic patient per year, withla mean cost of RM1127.91(t906.08) per diabetic patient per year in health clinic with FMS. In health clinic without FMS, the provider cost ranged from RM225.93 to RM4650.13, with a mean cost of RM802.15 (:626.26). Proportion ofgood HbA1c was 17.2% for health clinic with FMS and 10.3% for the health clinic without FMS. The annual mean provider cost per proportion of good HbA1c control (< 7%) (Costefkctiveness ratio/ CER) was RM6557.65.for health clinic with FMS and RM7787.88 for health clinic without FMS. This provider cost-epfectiveness ratio was not different statistically between the health clinic with FMS and health clinic without FMS (p=0.063). The cost of building, equipments, overheads, staff and consumables were higher for FMS group. Sensitivity analysis was performed for three discount rates (0, 5 and 7%). Relative cost-effectiveness of diabetes management in health clinic with FMS and health clinic without FMS was unchanged in all sensitivity scenarios. Even though, there was no significantly difference in provider CER in type 2 diabetes management at Malaysian MOH health clinics, but the provider CER in health clinic with FMS was lower compared to health clinic without FMS. Therefore, we can conclude that the presence of FMS in the health clinic will effectively improved the management of type 2 diabetes.
Fulltext Evaluation of trace metal levels in tissues of two commercial fish species in Kapar and Mersing coastal waters, Peninsular Malaysia

Bashir FA, Shuhaimi-Othman M, Mazlan AG

J Environ Public Health, 2012;2012:352309.
PMID: 22046193 DOI: 10.1155/2012/352309

This study is focused on evaluating the trace metal levels in water and tissues of two commercial fish species Arius thalassinus and Pennahia anea that were collected from Kapar and Mersing coastal waters. The concentrations of Fe, Zn, Al, As, Cd and Pb in these coastal waters and muscle, liver and gills tissues of the fishes were quantified. The relationship among the metal concentrations and the height and weight of the two species were also examined. Generally, the iron has the highest concentrations in both water and the fish species. However, Cd in both coastal waters showed high levels exceeding the international standards. The metal level concentration in the sample fishes are in the descending order livers > gills > muscles. A positive association between the trace metal concentrations and weight and length of the sample fishes was investigated. Fortunately the level of these metal concentrations in fish has not exceeded the permitted level of Malaysian and international standards.
Fulltext Immunocytochemical localization of carbonic anhydrase in the pseudobranch tissue of the rainbow trout Oncorhynchus mykiss

Rahim SM, Mazlan AG, Simon KD, Delaunoy JP, Laurent P

J Zhejiang Univ Sci B, 2014 Feb;15(2):194-200.
PMID: 24510712 DOI: 10.1631/jzus.B1200297

Pseudobranch function has long interested scientists, but its role has yet to be elucidated. Several studies have suggested that pseudobranchs serve respiratory, osmoregulatory, and sensory functions. This work investigated the immunolocalization of pseudobranch carbonic anhydrase (CA) in the teleost fish species rainbow trout (Oncorhynchus mykiss) to clarify its physiological function. CA was purified from rainbow trout gills O. mykiss and specific antibodies were raised. Immunoblotting between tissue homogenates of pseudobranch and gill CA antibodies showed specific immunostaining with only one band corresponding to CA in the pseudobranch homogenate. Results of immunohistochemical technique revealed that CA was distributed within pseudobranch cells and more precisely in the apical parts (anti-vascular) of cells. The basal (vascular) parts of cells, tubular system, blood capillaries, and pillar cells were not immunostained. Immunocytochemistry confirmed these results and showed that some CA enzyme was cytoplasmic and the remainder was linked to membranous structures. The results also showed that the lacunar tissue layers did not display immunoperoxidase activity. Our results indicated that pseudobranch CA may have a function related to the extracellular medium wherein CA intervenes with the mechanism of stimulation of afferent nerve fibers.
Fulltext Morphometric and meristic variation in two congeneric archer fishes Toxotes chatareus (Hamilton 1822) and Toxotes jaculatrix (Pallas 1767) inhabiting Malaysian coastal waters

Simon KD, Bakar Y, Temple SE, Mazlan AG

J Zhejiang Univ Sci B, 2010 Nov;11(11):871-9.
PMID: 21043056 DOI: 10.1631/jzus.B1000054

A simple yet useful criterion based on external markings and/or number of dorsal spines is currently used to differentiate two congeneric archer fish species Toxotes chatareus and Toxotes jaculatrix. Here we investigate other morphometric and meristic characters that can also be used to differentiate these two species. Principal component and/or discriminant functions revealed that meristic characters were highly correlated with pectoral fin ray count, number of lateral line scales, as well as number of anal fin rays. The results indicate that T. chatareus can be distinguished from T. jaculatrix by having a greater number of lateral line scales, a lower number of pectoral fin rays, and a higher number of anal fin rays. In contrast, morphometric discriminant analyses gave relatively low distinction: 76.1% of fish were ascribed to the correct species cluster. The observed morphometric differences came from the dorsal and anal spines lengths, with T. chatareus having shorter dorsal and longer anal spines than T. jaculatrix. Overall, meristic traits were more useful than morphometrics in differentiating the two species; nevertheless, meristics and morphometrics together provide information about the morphological differentiation between these two closely related archer fishes.
Fulltext Population growth, trophic level, and reproductive biology of two congeneric archer fishes (Toxotes chatareus, Hamilton 1822 and Toxotes jaculatrix, Pallas 1767) inhabiting Malaysian coastal waters

Simon KD, Bakar Y, Samat A, Zaidi CC, Aziz A, Mazlan AG

J Zhejiang Univ Sci B, 2009 Dec;10(12):902-11.
PMID: 19946954 DOI: 10.1631/jzus.B0920173

Population growth, trophic level, and some aspects of reproductive biology of two congeneric archer fish species, Toxotes chatareus and Toxotes jaculatrix, collected from Johor coastal waters, Malaysia, were studied. Growth pattern by length-weight relationship (W=aL(b)) for the sexes differed, and exhibited positive allometric growth (male, female and combined sexes of T. chatareus; female and combined sexes of T. jaculatrix) and isometric growth (male samples of T. jaculatrix only). Trophic levels of both species were analyzed based on 128 specimens. The results show that, in both species, crustaceans and insects were the most abundant prey items, and among crustaceans the red clawed crab Sesarma bidens and Formicidae family insects were the most represented taxa. The estimated mean trophic levels for T. chatareus and T. jaculatrix were 3.422+/-0.009 and 3.420+/-0.020, respectively, indicating that they are largely carnivores. Fecundity of T. chatareus ranged from 38 354 to 147 185 eggs for females with total length ranging from 14.5 to 22.5 cm and total body weight from 48.7 to 270.2 g, and T. jaculatrix 25 251 to 150 456 eggs for females with total length ranging from 12.2 to 23.0 cm and total body weight from 25.7 to 275.0 g. Differences in values of gonadosomatic and hepatosomatic indexes calculated for both species in this study may have resulted from uneven sample size ranges.
Impact of heat stress on health-related symptoms and physiological changes among workers at a palm oil mill in Mukah, Sarawak, Malaysia

Vallennie V, Isa SNI, Mazlan AZ, Shaifuddin SNM

Med J Malaysia, 2024 Mar;79(Suppl 1):82-87.
PMID: 38555890

INTRODUCTION: The palm oil (PO) industry is one of the most important sectors in the Malaysian economy. Workers at PO mills are, however, at risk for a number of health and safety issues, including heat stress, as the PO is one of the industries with high heat exposure. Heat stress occurs when a person's body cannot get rid of excess heat. Heat stress can result in heat cramps, heat exhaustion, heat rash, and heat stroke. It also results in physiological and psychological changes that can have an impact on a worker's performance. Therefore, this study aimed to evaluate the impact of heat stress on health-related symptoms and physiological changes among workers in a PO mill.
MATERIALS AND METHODS: This cross-sectional study was conducted in a PO mill located in Mukah, Sarawak, Malaysia. Thirty-one workers from the four workstations (sterilizer, boiler, oil, and engine rooms) were selected as the respondents in this study. Wet Bulb Globe Thermometer was used in this study to measure the environmental temperature (WBGTin). Body core temperature (BCT), blood pressure (BP), and heart rate (HR) were recorded both before and after working in order to assess the physiological effects of heat stress on workers. A set of questionnaires were used to determine sociodemographic characteristics of the respondents and their symptoms related to heat stress. Data were then analyzed using SPSS Ver28.
RESULTS: The WBGTin was found to be above the ACGIH threshold limit value of heat stress exposure in the engine room, sterilizer, and boiler workstations (>28.0°C). Additionally, there was a significant difference in the worker's BCT in these three workstations before and after work (p<0.05). Only the systolic BP and HR of those working at the boiler workstation showed significant difference between before and after work (p<0.05). The most typical symptoms that workers experience as a result of being exposed to heat at work include headache and fatigue. However, statistical analysis using Spearman Rho's test showed that there is no correlation between heat stress level with physiological changes and health-related symptoms among study respondents (p>0.05).
CONCLUSION: Results of the present study confirmed that workers in PO mill were exposed to high temperatures while at work. Although the evidence indicates the physiological parameters in general are not significantly affected while working, it also demonstrated that worker's body adapts and acclimates to the level of heat. Even so, precautions should still be taken to reduce future heat exposure. It is recommended that a physiological study be carried out that focuses on cognitive function impairment to support the evidence regarding the effects of heat stress on PO mill workers.
Fulltext Effect of Excoecaria agallocha on non-specific immune responses and disease resistance of Oreochromis niloticus against Streptococcus agalactiae

Laith AA, Mazlan AG, Effendy AW, Ambak MA, Nurhafizah WWI, Alia AS, et al.

Res Vet Sci, 2017 Jun;112:192-200.
PMID: 28499213 DOI: 10.1016/j.rvsc.2017.04.020

The current study was designed to evaluate the effects of Excoecaria agallocha leaf extracts on immune mechanisms and resistance of tilapia, Oreochromis niloticus, after challenge with Streptococcus agalactiae. Fish were divided into 6 groups; groups 1-5 fed with E. agallocha leaf extracts at 10, 20, 30, 40 and 50mgkg(-1) level, respectively. Group 6 were fed without extract addition and acted as control. E. agallocha extracts were administered as feed supplement in fish diet for 28days and the hematological, immunological, and growth performance studies were conducted. Fish were infected with S. agalactiae at a dose of 15×105CFUmL(-1) and the total white blood cell (WBC), phagocytosis and respiratory burst activities of leukocytes, serum bactericidal activity, lysozyme, total protein, albumin, and globulin levels were monitored and mortalities recorded for 15days post infection. Results revealed that feeding O. niloticus with 50mgkg(-1) of E. agallocha enhanced WBC, phagocytic, respiratory burst, serum bactericidal and lysozyme activities on day 28 pre-challenge and on 3rd, 6th, 9th, 12th and 15th day post-challenge as compared to control. Total protein and albumin were not enhanced by E. agallocha diet. E. agallocha increased the survival of fish after challenge with S. agalactiae. The highest mortality rate (97%) was observed in control fish and the lowest mortality (27%) was observed with group fed with 50mgkg(-1) extract. The results indicate that dietary intake of E. agallocha methanolic leaf extract in O. niloticus enhances the non-specific immunity and disease resistance against S. agalactiae pathogen.