Many physical and chemical properties of fats and oils have been investigated. In this study the oil content, Iodine value, specific gravity and some chemical analyses on oil extracted from the white and red seeds of sesame seeds were determined and compared with those reported by the other workers. The white and red sesame seeds have mean percentage oil contents of 48% and 50%, mean iodine value of 103 and 116gI 2 /100g and specific gravity of 0.915 and 0.923g/cm 3 respectively. The chemical analysis carried out on the oil of white and red sesame seeds have the following properties: acid value of 0.5 and 0.45 mg KOH/g, saponification value of 189 and 191 mg KOH/g and peroxide value of 8 and 7.45 meq KOH/g respectively. The high oil content of the sesame seeds obtained in this study strongly indicates its prospects for commercial extraction. @ JASEM

The determination of proximate, caffeine and tannin contents of five different (China, Kenya, India, Srilanka and Mambilla) tea leaves samples sold in Kano markets was conducted. The moisture content was generally high in all the tea samples and ranged from 5.6% in Mambila to 7.5% in India samples. Ash content was relatively low and ranged between 4.90% in Srilanka to 7.20% in Mambila and Kenya samples respectively. Crude fibre ranged from 14.00% in China to 18.82% in Srilanka samples, while ether extract content was within the range of 9.30% to 10.60% with the highest value found in Mambila sample and the least value in Kenya sample. Total nitrogen contents were low when compared with other workers' results and ranged from 0.88% in Kenya to 1.75% in Mambila and Srilanka samples respectively. Caffeine and tannin contents were found to be 1.4% in Kenya to 2.80% in China, 6.00% in Mambilla to 7.80% in India samples respectively.

Tea leaves can be a source of mineral components and trace elements as well as some undesirable substances due to exposure to the environment. In this study, Mg, Fe, Ca, Zn, Mn, Cu and Pb were analyzed by Atomic Absorption spectrophotometer (AAS), K and Na were also determined by flame photometer. Among the metals analyzed, K was the most abundant, ranging from 30.00mg/dm 3 in china sample to 34.60 mg/dm 3 in Srilanka sample, followed by Mg with 9.03 mg/dm 3 in India sample to 9.21 mg/dm 3 in Srilanka sample. Ca, Mn, Fe, Zn, Na and Cu were also found in reasonable amounts. Fortunately, toxic heavy metal (Pb) had the lowest concentration in all the tea samples with concentration ranging from 0.04 mg/dm 3 in India and Srilanka samples to 0.09 mg/dm 3 in China sample.