Toxic substance of fungal origin, e.g. aflatoxin. [AGROVOC]

Any substance normally consumed as a constituent of food: which provides energy; or which is needed for growth and development and maintenance of healthy life; or a deficit of which will cause characteristic biochemical or physiological changes to occur.  [AGROVOC]

Microorganisms, viruses and parasites that can cause disease.

A pesticide is any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest. [NALT]

Insecticides, fungicides, herbicides, disinfectants and any substance or mixture of substances intended for preventing, destroying or controlling any pest, including vectors of human or animal disease, unwanted species of plants or animals causing harm during or otherwise interfering with the production, processing, storage, transport or marketing of food, agricultural commodities, wood and wood products or animal feedstuffs, or substances which may be administered to animals for the control of insects, arachnids or other pests in or on their bodies. [AGROVOC]

Biological pigments, also known simply as pigments or biochromes, are substances produced by living organisms that have a color resulting from selective color absorption. [AGROVOC] 

Substances that sweeten food, beverages, medications, etc., such as sugar, saccharine or other low-calorie synthetic products.

Therapeutic preparation containing an antigen, i.e. a virus or a segment of a virus or a toxin generated by bacteria, that may have been attenuated, inactivated or killed and which is able to trigger the immune response and generate immunity in an organism.

Material, often unusable, left over from any manufacturing, industrial, agricultural or other human processes.