The detection of blood thrombin enzyme presented in eight samples of surimi based products was investigated by using Polymerase Chain Reaction (PCR) method. Specific primers for chicken (Gallus gallus), cow (Bos taurus) and pig (Sus sucrofa) blood thrombin enzyme were designed for positive detection. Two primers for chicken blood which are Gal2 and Gal3 showed 98% and 99% in significant identity of G.gallus coagulation factor II (thrombin) while two primers from cow which are Bos4 and Bos6 showed 100% significant identity of B. Taurus coagulation factor II (thrombin). On the contrary, there were no positive results on pig primers with S. sucrofa coagulation factor II (thrombin). PCR amplification with Gal2 and Bos4 primers in surimi based products showed several positive results while Sus5 primer showed none. Further research should be done to verify the consistency of this result and redesign a specific primer for pig's blood thrombin enzymes is vital in order to guarantee the quality of food products to comply with Halal food guidelines and regulations. � IDOSI Publications, 2012.

Abstract: The purpose of this paper is to determine the effect of different lipid sources (animal and plant) duringchilled storage on the formation of cholesterol and cholesterol oxidation products in sausages formulated withchicken fat and red palm mid fraction. The commercial sample, as represented by the chicken sausage and themechanical deboned meat sausage was analyzed as a comparison. The sausages were produced in a plant scalefor two batches, vacuum packed and stored at -4°C or chilled condition. At time intervals of week 0, 1, 2 and3, the sausages were analyzed using gas chromatography with flame ionization detector for determiningcholesterol and cholesterol oxidations products, which were 25-hyroxycholesterol,-epoxycholesterol,-epoxycholesterol and 7-ketocholesterol. This study showed the variable amount of compounds analyzedthroughout the period of analysis, 25-hydroxycholesterol detected in PMF at week 3 (0.77 ppm). Thesignificantly high amount of cholesterol was detected in MDM (239.99 ppm) at week 3. The different type ofsausages formulated with chicken fat and palm mid fraction which were animal and plant fats, respectively didnot show any significant changes towards the formation of cholesterol and COPs throughout the storageperiod in chilled condition. It is recommended for future works to prolong the period of storage to obtainconcrete result at the end of analysis, analyze the compounds using gas chromatography with massspectrometry to improve the detection limit and to expand the reference standard of cholesterol oxidationproducts to be used as the compounds may varies. Key words: Cholesterol Cholesterol oxidized products Sausages

The presence of lard or its derivatives in any food products is a serious religious issue among Muslim and Judaism. Thus, the objective of this study was to investigate the use of gas chromatography with flame ionisation detector (GC-FID) coupled with chemometrics techniques such as Principle Components Analysis (PCA) and K-mean cluster analysis to differentiate lard adulteration at very low concentrations in beef and chicken fats. The measurements were made from the pure lard, beef tallow, pure chicken fat; and beef tallow (BT), chicken fat (CF) adulterated with different concentrations of lard (0.5%-10% in BT and CF). The data were first scaled into standardisation before PCA is performed to each of the scaled data using Unscrambler software. The Scores plots and loadings plots of each scaled data were compared and studied. The results showed that lard contains higher fatty acid (FA) of C18: 2cis and low C16:0 FA, but oppositely for beef tallow and chicken fat. The amount of C4:0, C14:0, and C18:0 FAs are approximately similar for all fats. Others FAs are small in amount and nearly similar for both. Additionally, PCA was able to significantly identify lard, beef fat, chicken fat and the mixtures of lard and beef tallow, lard and chicken fat, even at lower concentration level (0.5 % lard-99.5% beef tallow / chicken fat (w/w). K-mean cluster only able to classify the pure lard (LD), pure chicken fat (CF) and pure beef tallow (BT).

Cooking process can lead to the formation of cholesterol oxidation products (COPs) which can give negative biological effects to human. The objective of this work was to study the effect of different cooking methods (grilled and roasted) on formation of COPs in beef and pork. The analysis involved four major steps; saponification, extraction, derivatisation and quantification by GC/MS-QQQ. Five common COPs (5-·-cholestane, 7-ketocholesterol, ·-epoxycholesterol, ·-epoxycholesterol and 25-hydroxycholesterol) that are generally reported in foods were analyzed to study the differences of their content between raw, grilled and roasted meat. Besides cholesterol, the most abundant compound in both types of samples that can be detected was ·-epoxycholesterol. Grilling process for both samples was observed to contain the highest cholesterol and total COPs level. Beef samples contain higher total cholesterol and COPs compared to pork. It implies that consume beef regularly gives bad effect to health. It is recommended to do analysis on the collected drip loss during the cooking methods as the cholesterol and COPs might be lost during heat treatment and more reference standards of COPs need to be used in this study.

The process of cooking may affect the fatty acids methyl esthers (FAME) content in food. The objective of this study is to determine the effect of grilling and roasting on FAME in beef and pork. Lipids were extracted using the Soxtherm fat extraction instrument. The fats were then methylated by sodium methoxide and being examined by using a gas chromatography. Data was analyzed using a one-way ANOVA. The amount of fatty acids in pork is significantly higher than in beef. The treatments within beef, showed significantly different values between the treatments. However, raw and grilled pork treatments were not significantly different except for the roast treatment (p<0.05). Ratio of polyunsaturated to saturated fatty acids (PUFA:SFA) in raw, grilled and roasted beef treatment are 0.03, 0.04 and 0.01. While in pork, raw, grilled and roasted treatments gives ratios 0.37, 0.33 and 0.30. This showed that pork has more PUFA content compared to beef. Further research can be done by changing the metod of extraction to see any difference between the methods. � IDOSI Publications, 2012.

The objective of this paper is to determine the effect of grilling and roasting on cholesterol oxidationproducts (COPs) in mutton and chicken. Four steps of analysis have been conducted: saponification, extraction,derivatisation and quantification by GCMS-QQQ. The temperature and time used for grilling was 230°C(20 minutes) while roasting was 190°C (25 minutes) using microwave. This study showed that there was nosignificant difference between raw mutton and raw chicken in the amount of cholesterol. Raw mutton havehigher amount of cholesterol than raw chicken due to the high content of SFA and cholesterol. In both of thecooking treatments, there was no significant difference in the amount for most of COPs, but for the grillingprocess, in -epoxide were significantly higher. In conclusion, the roasting treatment is better to be applied inmeat compared to grilling in term of COPs. It is suggested in the future works that the drip loss during thecooking being analyzed as the cholesterol and COPs might be lost during heat treatment and more referencestandards of COPs need to be used. Key word: Grilling Roasting Cholesterol Oxidation Products Chicken Mutton

The effect of grilling and roasting using a microwave oven on fatty acid profile of chicken and mutton meat was investigated. The lipid content (gravimetric method) and fatty acids composition (gas chromatography) were analyzed in three different treatments and applied on these meats in four replicates and two batches. Cooking losses, internal temperature reached by meat and, consequently, total lipids, increased directly with the cooking time and temperature used. Cooked chicken meat had a lower proportion of monounsaturated fatty acids (MUFA), polyunsaturated fatty acids (PUFA) and saturated fatty acids (SFA) than cooked mutton meat. PUFA/SFA ratio decreased in chicken meat and increased in mutton meat by heating. Chicken meat presents more favorable fatty acids profile than in mutton meat. This study implies the great choice for consumer to choose the healthier meat in a better way of cooking. It is recommended that other researchers should study on the nutritional value of chicken and mutton with other different cooking methods to obtain a better comparison data. � IDOSI Publications, 2012.

The objective of this study is to determine the effects of dietary fiber on the sensory properties of cooked chicken sausages by partial substitution of chicken fat (CF) with red palm mid fraction (RPMF). Four sausage formulations with the fat level of 5% were blended with rice bran 1.5% (RB) and carboxymethyl cellulose (CL). Instrumental analysis of water activity (a w), cook loss, pH value and texture (hardness) were performed to measure physicochemical properties. Sensory properties were estimated using a hedonic test. Statistical analysis was performed by using SPSS. The results showed that this fiber is compatible when used with red palm mid fraction (RPMF) fat in chicken sausages. The panelists indicated that all the formulations except the treatment with RPMF+CL were not significantly different to the control in terms of acceptability. In conclusion, the lipid content, when substituting CF with RPMF, with rice bran carboxymethyl cellulose, yielded acceptable chicken nuggets. This indicates the RPMF and rice bran formulations were equally comparable or better than the CF formulation. It is recommended that multiple analyses with different analytical instrumentation (GC, FTIR and UV-Vis) may explain better the antioxidants behaviour and oxidative stability of the products. � IDOSI Publications, 2012.

Abstract:Cholesterol oxidation products (COPs) have been shown potentially atherogenic, mutagenic andcarcinogenic effects towards human. Storage of food will increase the production of COPs. The objective ofthis research is to investigate the effect of cold storage (chilled storage, 4°C and frozen storage, -20°C) on fattyacids content and formation of cholesterol oxides in three different lipid sources of sausage productscontaining chicken fat (CF), Super Olein (SO) and Red Palm Stearin (RPS).Three types of chicken sausages withdifferent lipid sources: CF, SO and RPS were prepared and stored in chiller for zero, first, second and third weeksand stored frozen for zero, fourth and eight weeks. Fatty Acids and COPs in samples were extracted andanalyzed using gas chromatography with flame ionization detector (FID). The reduction of unsaturated fattyacids, cholesterol content and formation of cholesterol oxides were found during throughout the storage life.The Red Palm Stearin (RPS) samples showed significant increment of the total saturated fatty acid comparedto Super Olein (SO) and chicken fat (CF). It was concluded the saturated fatty acids (SFA) andmonounsaturated fatty acids (MUFA) increased in comparison to polyunsaturated fatty acids (PUFA) in allsamples during chilled storage and the amount of COPs were in the following order; CF>SO>RPS. It implies thatsausages formulated with SO and RPS are effective in reducing COPs formation. The recommendations are towider the range of COPs reference standards. Key words:Cholesterol Oxidation Products (COPs) Fatty Acid Methyl Ester (FAME) Gas Chromatography (GC)

The adulteration of edible fats is a kind of fraud that impairs the physical and chemical features of the original lipid materials. It has been detected in various food, pharmaceutical and cosmeceutical products. Differential scanning calorimetry (DSC) is the robust thermo-analytical machine that permits to fingerprint the primary crystallisation of triacylglycerols (TAGs) molecules and their transition behaviours. The aims of this study was to assess the cross-contamination caused by lard concentration of 0.5-5% in the mixture systems containing beef tallow (BT) and chicken fat (CF) separately. TAGs species of pure and adulterated lipids in relation to their crystallisation and melting parameters were studied using principal components analysis (PCA). The results showed that by using the heating profiles the discrimination of LD from BT and CF was very clear even at low dose of less than 1%. Same observation was depicted from the crystallisation profiles of BT adulterated by LD doses ranging from 0.1% to 1% and from 2% to 5%, respectively. Furthermore, CF adulterated with LD did not exhibit clear changes on its crystallisation profiles. Consequently, DSC coupled with PCA is one of the techniques that might use to monitor and differentiate the minimum adulteration levels caused by LD in different animal fats. � 2014 Published by Elsevier Ltd.

Abstract: The effects of rice bran and carboxymethyl cellulose (CMC) on the oxidative stability of smokedchicken sausages were determined. Lipid oxidation was analyzed at several different days of chilled storage(n=3, for all measurements). Thiobarbituric acid (TBA) values and peroxide value (PV) of smoked chickensausages increased throughout the nine days of storage (4°C). Chicken sausage formulated with Red Palm MidFraction (RPMF) showed significantly lower TBA value compared to the samples prepared with chicken fat(p<0.05). However, -carotene content showed the highest significant value (p<0.05) in sausage incorporatedwith RPMF. It was concluded that the utilization of RPMF significantly reduced the oxidation of lipid, whichwas indicated, by the TBA values. This study also showed that the small amount of dietary fiber (rice bran) alsoimprove the oxidative stability of smoked chicken sausages. It can be suggest that the time for oxidation studyneed longer storage duration to see the good result plot and changes that occur can be determined clearly. Key words: Oxidative Stability Red Palm Mid Fraction Chicken Fat Chicken Sausage