#altering agent

• Alterant — Causing an alteration, degradation, or negative structural transformation; a substance, physical agent, or biological factor capable of modifying or spoiling the initial qualities of a medium, a chemical preparation, or a living tissue.
• Altering agent — Feminine form (singular or plural) or neuter form (plural) of the word 'alterator'; describes a substance, external agent, or biological entity that causes the degradation, spoiling, or structural decomposition of an organic or chemical medium.
• Alterator — Causing alteration, degradation, or damage to the fundamental properties of a body; a physical, chemical, or biological agent that causes the decomposition of materials or the spoilage of food products.