Clarification and stabilization of wine Organic compounds used as fining agents are generally animal based, a possible cause of concern to vegans. The most common organic compounds used include egg whites, casein derived from milk, gelatin and isinglass obtained from the bladders of fish. Pulverized minerals and solid materials can also be used, with bentonite clay being one of the most common, thanks to its effectiveness in absorbing proteins and some bacteria. Activated carbon from charcoal is used to remove some phenols that contribute to browning as well as some particles that produce "off-odors" in the wine. In a process known as blue fining, potassium
Tonda Wildlife Management Area the subject of poaching by people from neighbouring Papua Province, Indonesia. Local people also harvest and sell a number of wildlife resources to merchants on the other side of the border, including deer meat and antlers, candlenut, the plastra of freshwater turtles, shark fins, saratoga ("Scleropages jardinii") fingerlings and the dried swim bladders of certain fish. Tonda Wildlife Management Area The Tonda Wildlife Management Area is a wetland of international importance and the largest protected area in Papua New Guinea. It is located in the south-western corner of the Western Province and is contiguous with Wasur National Park of Indonesia.