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Oil and squalene in amaranthus grain and leaf.
J Agric Food Chem. 2003 Dec 31; 51(27):7913-20.JA

Abstract

Amaranthus grain of 104 genotypes from 30 species was investigated for oil and squalene contents and fatty acid profiles. The overall average oil content in Amaranthus grain was 5.0%, ranging from 1.9 to 8.7%. Squalene concentration in extracted oils ranged from trace to 7.3%, with an average concentration of 4.2%. The average contents of three major fatty acids in Amaranthus grain were 22.2, 29.1, and 44.6% for palmitic, oleic, and linoleic, respectively. The average fat content in dried mature leaves of 45 Amaranthus genotypes was 1.63%, ranging from 1.08 to 2.18%. The squalene concentration in leaf lipid extracts averaged 0.26%, ranging from trace to 0.77%, which is much lower than that from seeds. The major fatty acids of leaf extracts were linolenic, linoleic, and palmitic. Linolenic ranged from 56.5 to 62.0% of total fatty acids; linoleic, from 15.5 to 24.7%; and palmitic acid, from 13.5 to 15.5%. As for the fatty acid compositions at different growth stages, fatty acid content in leaf lipid was lower in mature leaves than in young leaves. The saturated/unsaturated ratio decreased when the leaf grew to maturity. Principal component analysis (PCA) was carried out on compositional characteristics of grain. The first two components accounted for 70% of the total variance (38.3 and 21.7%, respectively). There was a positive correlation between oil content and squalene yield, and a negative correlations were found between linoleic and either of the other two major fatty acids, palmitic and oleic. The taxonomic relationship among the species was also elucidated by PCA.

Authors+Show Affiliations

He HP
Department of Botany, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China.
Corke H
No affiliation info available

MeSH

AmaranthusAnalysis of VarianceGenotypeLinoleic AcidOleic AcidPalmitic AcidPlant ExtractsPlant LeavesPlant OilsSeedsSqualene

Pub Type(s)

Journal Article

Language

eng

PubMed ID

14690373

Citation

He, Han-Ping, and Harold Corke. "Oil and Squalene in Amaranthus Grain and Leaf." Journal of Agricultural and Food Chemistry, vol. 51, no. 27, 2003, pp. 7913-20.
He HP, Corke H. Oil and squalene in amaranthus grain and leaf. J Agric Food Chem. 2003;51(27):7913-20.
He, H. P., & Corke, H. (2003). Oil and squalene in amaranthus grain and leaf. Journal of Agricultural and Food Chemistry, 51(27), 7913-20.
He HP, Corke H. Oil and Squalene in Amaranthus Grain and Leaf. J Agric Food Chem. 2003 Dec 31;51(27):7913-20. PubMed PMID: 14690373.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Oil and squalene in amaranthus grain and leaf. AU - He,Han-Ping, AU - Corke,Harold, PY - 2003/12/24/pubmed PY - 2004/3/6/medline PY - 2003/12/24/entrez SP - 7913 EP - 20 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 51 IS - 27 N2 - Amaranthus grain of 104 genotypes from 30 species was investigated for oil and squalene contents and fatty acid profiles. The overall average oil content in Amaranthus grain was 5.0%, ranging from 1.9 to 8.7%. Squalene concentration in extracted oils ranged from trace to 7.3%, with an average concentration of 4.2%. The average contents of three major fatty acids in Amaranthus grain were 22.2, 29.1, and 44.6% for palmitic, oleic, and linoleic, respectively. The average fat content in dried mature leaves of 45 Amaranthus genotypes was 1.63%, ranging from 1.08 to 2.18%. The squalene concentration in leaf lipid extracts averaged 0.26%, ranging from trace to 0.77%, which is much lower than that from seeds. The major fatty acids of leaf extracts were linolenic, linoleic, and palmitic. Linolenic ranged from 56.5 to 62.0% of total fatty acids; linoleic, from 15.5 to 24.7%; and palmitic acid, from 13.5 to 15.5%. As for the fatty acid compositions at different growth stages, fatty acid content in leaf lipid was lower in mature leaves than in young leaves. The saturated/unsaturated ratio decreased when the leaf grew to maturity. Principal component analysis (PCA) was carried out on compositional characteristics of grain. The first two components accounted for 70% of the total variance (38.3 and 21.7%, respectively). There was a positive correlation between oil content and squalene yield, and a negative correlations were found between linoleic and either of the other two major fatty acids, palmitic and oleic. The taxonomic relationship among the species was also elucidated by PCA. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/14690373/Oil_and_squalene_in_amaranthus_grain_and_leaf_ DB - PRIME DP - Unbound Medicine ER -