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Macadamia is an evergreen genus that grows 2–12 m (7–40 ft) tall.. The leaves are arranged in whorls of three to six, lanceolate to obovate or elliptic in shape, 60–300 mm (2 + 1 ⁄ 2 –12 in) long and 30–130 mm (1 + 1 ⁄ 8 – 5 + 1 ⁄ 8 in) broad, with an entire or spiny-serrated margin.
Macadamia oil, also known as macadamia nut oil, is a non-volatile oil extracted from the nuts of the macadamia tree (Macadamia integrifolia), indigenous to Australia. This oil is used in culinary applications as a frying or salad oil, and in cosmetics for its emollient properties and as a fragrance fixative .
Macadamia tetraphylla was the first Australian native food plant to be grown by non-indigenous Australians as a commercial crop. The first commercial plantation of macadamia trees were planted in the early 1880s by Charles Staff at Rous Mill, 12 km southeast of Lismore, New South Wales, consisting of M. tetraphylla. [4]
Macadamia ternifolia is a small multi-stemmed tree which grows up to 8 m tall. The narrowly ovate adult leaves are in whorls of three on a stalk which is 4–10 mm long. [ 3 ] Each leaf is 9–12.5 cm long, 2–3.5 cm wide and is dull above and paler below. [ 3 ]
Macadamia integrifolia trees grow to 15 metres (49 ft) in height. The leaves are simple, oblong in shape, glossy, entire with wavy leaf margins and are 20 centimetres (8 in) long and 10 cm wide. [3] The flowers are white or pink followed by woody, edible rounded fruits [4] which are 2 to 3.5 cm in diameter.
Mauna Loa Macadamia Nut Corporation is the world's largest processor of macadamia seeds. The American company was a subsidiary of The Hershey Company from 2004 to 2015, when it was acquired by Hawaiian Host , Inc. [ 1 ] The company takes its name from the volcano Mauna Loa .
Oil was distilled for the first time in 1875, and by the turn of the 20th century, production of Australian sandalwood oil was intermittent. However, in the late 1990s, Western Australian sandalwood oil enjoyed a revival and by 2009 had peaked at more than 20,000 kg (44,000 lb) per year – much of which went to the fragrance industries in Europe.
Macadamia jansenii is an endangered and poisonous tree in the flowering plant family Proteaceae, native to Queensland in Australia. [1] It was only described as a new species in 1991, being first brought to the attention of plant scientists in 1983 by Ray Jansen, a sugarcane farmer and amateur botanist from South Kolan in Central Queensland . [ 2 ]