MyMedR

Antioxidant capacity and phenolic composition of fermented Centella asiatica herbal teas

Ariffin F, Heong Chew S, Bhupinder K, Karim AA, Huda N

J Sci Food Agric, 2011 Dec;91(15):2731-9.

PMID: 21987075 DOI: 10.1002/jsfa.4454

C. asiatica was exposed to various fermentations: no fermentation (0 min), partial fermentation (120 min) and full fermentation (24 h). Total phenolic content (TPC) and ferric-reducing antioxidant power (FRAP) of C. asiatica infusions were studied as a function of water temperature (60, 80 or 100 °C), the brewing stage (one, two or three) and the brewing time (1, 3, 5, 10, 15 or 20 min). The optimum brewing procedure was adopted to study the antioxidant properties and phenolic compounds in C. asiatica infusions.

Physicochemical properties of hydrothermally treated hemicellulose from oil palm frond

Fazilah A, Azemi MN, Karim AA, Norakma MN

J Agric Food Chem, 2009 Feb 25;57(4):1527-31.

PMID: 19166335 DOI: 10.1021/jf8028013

Hemicelluloses from oil palm frond (OPF) were extracted using 3 M potassium hydroxide (KOH) for 4 h at 40 degrees C with stirring at 400 rpm to obtain hemicelluloses A and B. The total yield of the hemicellulose isolated from OPF was 33% (dry weight). Both hemicelluloses A and B were then subjected to hydrothermal treatment at 121 degrees C and 1.03 x 10(5) Pa for 10, 30, and 50 min. Physicochemical characterizations of hydrothermally treated hemicelluloses, such as Klason lignin content and reducing sugar content, were performed to study the effect of autohydrolysis processing on OPF-derived hemicelluloses. It was shown that Klason lignin content in hemicellulose A was higher than that in hemicellulose B and decreased after hydrothermal treatment. Hydrothermal treatment enhanced the solubility of hemicelluloses, which reflects their higher reducing sugar content. Monosaccharide analysis using HPLC showed that xylose was the predominant monosaccharide for both hemicelluloses A and B.

Fulltext Hanging: a ten-year retrospective review of Malaysian forensic cases

Md Naziri S.Z., Abu Bakar S.N., Alias A., Ibrahim A., Mohamed Swarhib D.M.J., Mohd Nor F.

International Medical Journal Malaysia, 2018;17(2):27-32.

MyJurnal

Introduction: Hanging is one of the most common methods of suicide in Malaysia, and to date, there is a rise in the number of deaths by hanging among adults. The purpose of this study was to determine the pattern of hanging in Malaysia from the year 2000 till 2009. Methods: The sample comprised 108 cases received at the Universiti Kebangsaan Malaysia Medical Centre, and five parameters, namely, age, sex, racial affiliation, marital status, and medical history were studied. Results: Of the 108 cases, 56% was reported to be Chinese. Suicide by hanging was more predominant in males (81%), and a high number of cases were seen in age groups of 21 to 30, 31 to 40 and 41 to 50 years. Of the cases studied, half of them were married, and previous history of physical and mental illness and alcohol intoxication were reported. Conclusions: In brief, this data would help the higher authorities in detecting the causes of suicide by hanging, as well as detecting the high risk groups with suicidal tendencies. In this way, suicide can be prevented and thus, the rate of suicide by hanging could be reduced in Malaysian.

Emulsifying and foaming properties of ultraviolet-irradiated egg white protein and sodium caseinate

Kuan YH, Bhat R, Karim AA

J Agric Food Chem, 2011 Apr 27;59(8):4111-8.

PMID: 21401213 DOI: 10.1021/jf104050k

The physicochemical and functional properties of ultraviolet (UV)-treated egg white protein (EW) and sodium caseinate (SC) were investigated. UV irradiation of the proteins was carried out for 30, 60, 90, and 120 min. However, the SC samples were subjected to extended UV irradiation for 4 and 6 h as no difference was found on the initial UV exposure time. Formol titration, SDS-PAGE, and FTIR analyses indicated that UV irradiation could induce cross-linking on proteins and led to improved emulsifying and foaming properties (P < 0.05). These results indicated that the UV-irradiated EW and SC could be used as novel emulsifier and foaming agents in broad food systems for stabilizing and foaming purposes.

Physicochemical and functional properties of ozone-oxidized starch

Chan HT, Bhat R, Karim AA

J Agric Food Chem, 2009 Jul 8;57(13):5965-70.

PMID: 19489606 DOI: 10.1021/jf9008789

The effects of oxidation by ozone gas on some physicochemical and functional properties of starch (corn, sago, and tapioca) were investigated. Starch in dry powder form was exposed to ozone for 10 min at different ozone generation times (OGTs). Carboxyl and carbonyl contents increased markedly in all starches with increasing OGTs. Oxidation significantly decreased the swelling power of oxidized sago and tapioca starches but increased that of oxidized corn starch. The solubility of tapioca starch decreased and sago starch increased after oxidation. However, there was an insignificant changed in the solubility of oxidized corn starch. Intrinsic viscosity [eta] of all oxidized starches decreased significantly, except for tapioca starch oxidized at 5 min OGT. Pasting properties of the oxidized starches followed different trends as OGTs increased. These results show that under similar conditions of ozone treatment, the extent of starch oxidation varies among different types of starch.

Fulltext Protective effects of Ficus racemosa stem bark against doxorubucin-induced renal and testicular toxicity

Ahmed F, Urooj A, Karim AA

Pharmacogn Mag, 2013 Apr;9(34):130-4.

PMID: 23772108 DOI: 10.4103/0973-1296.111265

BACKGROUND: Ficus racemosa Linn. (Moraceae) bark is a rich source of phenolic compounds known to possess potential antioxidant activity offering numerous health benefits.

MATERIALS AND METHODS: The present study evaluated the protective effects of sequential acetone extract of Ficus racemosa bark at two doses (FR250; 250 mg kg(-1) and FR500; 500 mg kg(-1) p.o.) against doxorubicin-induced renal and testicular toxicity in rats.

RESULTS: Doxorubicin administration resulted in significant decrease (P ≤ 0.05) in total protein and glutathione concentrations, while increased (P ≤ 0.05) serum urea, creatinine and thiobarbituric acid reactive substances (TBARS). Extract pretreatment restored biochemical parameters toward normalization. FR250 and FR500 decreased serum creatinine levels by 22.5% and 44%, while serum urea levels were decreased by 30.4% and 58.8%, respectively. Extract pretreatment (500 mg kg(-1)) decreased TBARS and increased glutathione levels in the kidney and testis to control levels. These observations were substantiated by histopathological studies, wherein normal renal and testicular architecture was restored in FR500 group.

CONCLUSION: Doxorubicin exposure results in pronounced oxidative stress, and administration of F. racemosa stem bark extract offers significant renal and testicular protection by inhibiting lipidperoxidation-mediated through scavenging free radicals.

Fulltext Cyclosporiasis in a HIV-positive patient

Alias A, Shukri A

Med J Malaysia, 1998 Sep;53(3):311-2.

PMID: 10968174

Displaying publications 61 - 67 of 67 in total