Tamanu oil  Tamanu oil is pressed from nuts of either the "Calophyllum inophyllum" (usually) or the "Calophyllum tacamahaca" ("ati"), tropical trees belonging to Calophyllaceae family. The nuts yield 70–75% of the greenish-yellow inedible oil. The oil originates in Polynesia, where it continues to play an important cultural role. Commercial uses of tamanu oil are predominantly for skin care. The oil has both medicinal value and use as a fuel. The seeds yield a thick, dark green tamanu oil for medicinal use or hair grease. The first neoflavone isolated in 1951 from natural sources was calophyllolide from "C. inophyllum" seeds. The fatty acid methyl esters derived from "C. inophyllum" seed oil meets the major biodiesel requirements in the United States (ASTM D 6751), and European Union (EN 14214). The average oil yield is 11.7 kg-oil/tree or 4680 kg-oil/hectare. In the northwest coastal areas of Luzon island in Philippines, the oil was used for night lamps. This widespread use started to decline when kerosene became available, and later on electricity. It was also used as fuel to generate electricity to provide power for radios during World War II. In Southern India, the oil of the seeds of the plant is used specifically for treating skin diseases. It is also applied topically in cases of rheumatism. The oil may have been useful in waterproofing cloth and is used as a varnish. An extract from the fruit was once used to make a brown dye to colour cloth. The oil can also be used to make soap. In the most of the South Sea islands, tamanu or sultan champa oil is used as an analgesic medicine (natives use it for sciatica and rheumatism) and to cure ulcers and bad wounds A farmer in Nagappattinam district of Tamil Nadu has successfully used the oil as biodiesel to run his 5-hp pumpset. It is also called "beauty leaf oil", "calophyllum inophyllum seed oil", "calophyllum inophyllum oil", "kamani oil", "calophyllum oil", "calophyllum inophyllum essential oil", "dilo oil", "foraha oil", "Alexandrian laurel oil", "poon oil", "nyamplung oil", "domba oil", "honne oil" (Honge is used as biodiesel]), "undi oil", "pinnai oil", "fetau oil", "punnai oil", "daok oil", "pinnay oil", "kamanu oil", "bitaog oil", "tamanu nut oil", "punna oil", "takamaka oil" (ambiguous), "laurelwood oil" (ambiguous), "tacamahac oil" (ambiguous), "punnaga oil", "fetaʻu oil", "palo maria oil", "ballnut tree oil", "ballnut oil", "btaches oil", "beach calophyllum oil", or "mù u oil".