Abstract: Seleniferous composition is provided which comprises Se-methylseleno-cysteine (MeSeCys: SeCH3—CH2—CHNH2—COOH) or derivative thereof. When human or animal body ingests the seleniferous composition, their living body naturally produces enzymes such as superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione-S-transferase (GST) for decomposing active oxygen to positively prevent and treat cancer.

Abstract: Fertilizer with a chelate element is provided which comprises 0.01 to 4 parts of a compound of a metal for forming the central metal of a chelate compound, 1 to 5 parts of an oxycarboxylic acid, 2 to 8 parts of a potassic element, 0.1 to 1 part of a nitrogenous element, and 0.01 to 2 parts of a phosphorous element by weight, indicating a pH value of 6.0 to 7.5 when mixed with water. When a living body ingests an agricultural product cultivated with the fertilizer, the chelate derives glutathione S-transferase molecular species which can catalyze the detoxicating reaction of the electrophillic compound by the S-bonded reaction of said electrophillic compound and nucleophillic reduction-type glutathione peroxidase.

Abstract: An alcoholic beverage is provided which contains 0.01 to 5 parts of a chelate compound by weight for improvement of the aroma and taste of the beverage and for derivation of enzymes to produce a detoxifying effect on carcinogenic substances and undesirable bacteria and viruses, and an antioxidative effect for reducing active oxygen in living bodies.