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Physicochemical Profile of Essential Oils Obtained from Chia (Salvia hispanica L.) Seeds Grown in Different Agro-Ecological Zones of Kenya

Author

Listed:
  • Clement Komu

    (Dedan Kimathi University of Technology, Kenya)

  • Monica Mburu

    (Dedan Kimathi University of Technology, Kenya)

  • Daniel Njoroge

    (Dedan Kimathi University of Technology, Kenya)

  • Richard Koskei

    (Dedan Kimathi University of Technology, Kenya)

Abstract

The chia seed samples were purchased from farmers in five locations in three agro-ecological zones in Kenya. The oil was obtained by cold pressing and physicochemical properties were determined; the fatty acid profile was determined by Gas chromatography. The mean oil yield from pressing was 16%, the refractive index of chia seed oil at 25 °C ranged from 1.4811 to 1.4832, specific gravity ranged from 0.9616 to 0.9629, acidity index and free fatty acids content ranged from 0.0345-0.0808 mg KOH/g oil, and 0.1736-0.4061%, respectively. The matter in volatiles ranged from 0.047-0.086%. The saponification value ranged from 162.1969–183.3791 milligrams (mg) of potassium hydroxide (KOH) per gram (g) of chia seed oil. The differences in refractive index, acidity index, free fatty acids, specific gravity, and saponification value, were statistically significant at (P

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Handle: RePEc:epw:ejchem:v:2:y:2021:i:3:id:5056
DOI: 10.24018/ejchem.2021.2.3.56
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