Lipid classes, fatty acids, and tocopherols of leaves of six edible plant species

Abstract

Young leaves of six plants, namely Tamarindus indica (tamarind), Oxalis corniculata (Indian sorrel), Rumex vesicarius (bladder dock), Alternanthera sessilis, Trigonella foenumgraecum (fenugreek), and Talinum triangulare (Ceylon spinach), yielded, on extraction with chloroform-methanol 1.16, 1.47, 0.47,0.54,1.50, and 2.42% lipids (dry weight), respectively. Silica gel column chromatography yielded 37.0-80.5% neutral lipids (NL), 21.7-44.7% glycolipids (GL), and 1.2-26.5% phospholipids (PL). Capillary gas-liquid chromatography (GC) showed the major fatty acids to be 18:2 and 18:3 in NL, 18:3 in GL, and 18:3 followed by 18:2 and 16:0 in PL. T. triangulare leaf lipids contained medium-chain saturated fatty acids (Cio-Cu) in an appreciable amount (36.7 %). GC-mass spectrometric and ultraviolet and infrared spectrophotometric analyses did not reveal the presence of r-linolenic (GLA), trans, conjugated, or other unusual fatty acids. High-performance liquid chromatography showed the presence of a-and /3-tocopherols but not other tocopherols and tocotrienols.Leaves used in culinary preparations are rich sources of essential fatty acids, namely linoleic (18:2n-6) and linolenic (18:3n-3) acids (Lakshminarayana et al., 1984;Rao and Lakshminarayana, 1988). The present paper reports the * Author to whom correspondence should be addressed. f Communication No.

Gamma‐linolenic and stearidonic acids: Purification and upgrading of C18‐PUFA oils

“…Vioque et al [24] used hexane for seed lipid extraction from plant seeds. Sridhar and Lakshinarayana [25] employed Kates method [26], with chloroform-methanol 1:2 v/v for leaf lipid extraction. Daun and Tkachuk [27] extracted total lipids from wild plant seeds with diethyl ether.…”

Tocoferois e tocotrienois em óleos vegetais e ovos

“…5 Tocoferois e tocotrienois são encontrados em proporções variáveis em plantas, sendo que as fontes principais são óleos vegetais, germe de trigo, sementes oleaginosas, vegetais folhosos verde-escuros e alimentos de origem animal, principalmente gema de ovo e fígado. 4,6,7 Os isômeros mais abundantes nesses alimentos são o γ-e o α-tocoferol. 8 Atualmente, não se pode desconsiderar a utilização de alimentos enriquecidos e fortificados, como fontes ricas em vitamina E.…”

“…4,6,7 Os isômeros mais abundantes nesses alimentos são o γ-e o α-tocoferol. 8 Atualmente, não se pode desconsiderar a utilização de alimentos enriquecidos e fortificados, como fontes ricas em vitamina E.…”

Preparation and Standardization of Poly-Herbal Formulation for Rheumatoid Arthritis

“…[6,7] It is used for the convulsions in children and healing for fractured bones. [8] treat induration of breasts and warty vaginal discharges. [10] The plant studies have reported, that the plant Spathodea companulata showed wound healing, [11] Abortifacient and Antiimplantation.…”