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Physicochemical indexes and composition of myrtle seed oil
  
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KeyWord:myrtle seed oil  physicochemical index  fatty acid composition  nutrient composition
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WANG Yongjin，LIU Wentao，CAO Ruizhi，etc  
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Abstract:
      The extraction of oil from myrtle seeds by ASE extraction method was studied, and its physicochemical index, fatty acid composition and nutrient composition were analyzed. The results showed that the oil rate of myrtle seed was 7.5%. The relative density, refractive index, acid value, peroxide value, saponification value, iodine value and unsaponifiable matter content of the myrtle seed oil were 0.915 6, 1.474 7, 4426 mgKOH/g, 1.573 mmol/kg, 180.5 mgKOH/g, 135.0 gI/100 g and 4.5%, respectively. The myrtle seed oil contained 16 kinds of fatty acids, which mainly were linoleic acid, oleic acid, stearic acid and palmitic acid. The contents of unsaturated fatty acids and saturated fatty acids were 85837% and 14.175%, respectively. The myrtle seed oil was also rich in brassicasterol, campesterol, β-sitosterol, α-tocopherol, zeaxanthin and other nutrients.
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