Kopi Luwak pound in 2010. The specialty Vietnamese "weasel coffee", which is made by collecting coffee beans eaten by wild civets, is sold at US$500 per kilogram. Most customers are Asian, especially those originating from Japan, China and South Korea. Sources vary widely as to annual worldwide production. The price of farmed (considered low-grade by connoisseurs) kopi luwak in large Indonesian supermarkets is from US$100 per kilogram (five times the price of a high quality local arabica coffee). The price paid to collectors in the Philippines is closer to US$20 per kilogram. Some specialty coffee shops sell cups of brewed kopi luwak
Cellular waste product as well as by cells called anaerobes that selectively perform anaerobic respiration even in the presence of oxygen. In anaerobic respiration, weak oxidants like sulfate and nitrate serve as oxidants in the place of oxygen. Generally, in anaerobic respiration sugars are broken down into carbon dioxide and other waste products that are dictated by the oxidant the cell uses. Whereas in aerobic respiration the oxidant is always oxygen, in anaerobic respiration it varies. Each oxidant produces a different waste product, such as nitrite, succinate, sulfide, methane, and acetate. Anaerobic respiration is correspondingly less efficient than aerobic respiration. In the absence