Kopi Luwak available. Kopi luwak is a name for any beans collected from the excrement of civets, hence the taste may vary with the type and origin of beans ingested, processing subsequent to collection, roasting, aging and brewing. The ability of the civet to select its berries, and other aspects of the civet's diet and health (e.g. stress levels) may also influence the processing and hence taste. In the coffee industry, kopi luwak is widely regarded as a gimmick or novelty item. The Specialty Coffee Association of America (SCAA) states that there is a "general consensus within the industry ... it just
Metabolic waste excreta. Some mammals including humans excrete uric acid as a component of their urine but it is only a small amount. These compounds form during the catabolism of carbohydrates and lipids in condensation reactions, and in some other metabolic reactions of the amino acids. Oxygen is produced by plants and some bacteria in photosynthesis, while CO is a waste product of all animals and plants. Nitrogen gases are produced by denitrifying bacteria and as a waste product, and bacteria for decaying yield ammonia, as do most invertebrates and vertebrates. Water is the only liquid waste from animals and photosynthesizing plants.