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pp.13-23
Contents of total lipids, neutral lipids, glycolipids and phospholipids of seed oils of 16 species of the Labiatae family were determined and their fatty acid compositions were analyzed by gas-liquid chromatography. The results were summarized as follows. 1) Lipid contents of seeds were shown to be 40.6％ in Perilla frutescens Britton var. japonica, 32.2％ in P. frutescens britton var. acuta, 31.9％ in lsodon japonicus, 32.7% in l. inflexus, 48.3％ in l. serra, 35.1％ in Mosls dianthera, 38.2％ in M. punctulata, 33.4％ in Nepeta cataria, 26.3％ in Agastache rugosa, 30.9％ in Eisholtzia ciliata, 18.9％ in Salvia splendens, 23.9％ in Lycopus maackianus, 49.5％ in Clinopodium chinense var. parviflorum, 30.9％ in Ametystea caerulea, 33.1％ in Leonurus sibircus and 34.3％ in Scutellaria basicalensis. 2) Contents of neutral lipids, glycolipids and phospholipids from the seed oils amounted to 98.6％, 0.7％, 0.8％ in P. frutescens Britton var. japonica; 95.5％, 1.3％, 3.1％ in P. frutescens Britton var. acuta; 95.1％, 1.8％, 3.1％ in l. japoincus; 91.4％, 3.5％, 5.1％ in l. inflexus; 96.8％, 0.7％, 2.5％ in l, serra; 96.0％, 1.8％, 2.2％ in Mosla dianthera; 94.7％, 2.0％, 3.3％ in M. punctulata; 90.1％, 2.4％, 7.5％ in Nepeta cataria; 90.1％, 3.4％, 6.5％ in Agastache rugosa; 86.3％, 3.3％, 10.4％ in Elsholtzia ciliata; 94.3％, 1.5％, 4.3％ in Salvia splendens; 87.2％, 2.9％, 9.0％ in Lycopus maackianus; 87.0％, 1.5％, 11.5％ in Clinopodium chinense var. parviflorum; 91.8％, 1.6％, 6.6％; 95.5％, 0.4％, 4.1％ in Leonurus sibricus; 89.0％, 1.4％, 9.6％ in Scutellaria baicalensis. 3) Total lipids revealed the predominace of unsaturated fatty acids (82.0-94.5％) and larger variations were found in the composition of α-linolenic acid (0.4-67.9％) and linoleic acid (11.2-82.9％). High level of α-linoenic acid was present in P. frutescens Britton var. japonica (67.9％), P. frutescens Britton var, acuta (66.0％), lsodon japonicus (65.2％), l. inflexus (59.0％), l. serra (57.3％), Mosla dianthera (60.9％), Nepeta cataria (58.3％), Agastache rugosa (58.5％) and Elsholtzia ciliata (46.2％), and followed by linoleic acid (11.2-32.1％) and oleic acid (9.3-12.2％). However, linoleic acid was the most predominant component in the total lipids of Clinopodium chinense var. parviflorum (62.4％), Ametystea caerules (82.9％), Leonurus sibricus (60.9％) and Scutellaria baicalensis (63.4％), with very small amounts of α-linolenic acid (0.4-3.1％). The total lipids of Salvia splendens, Lycopus maackianus and Mosla punctulata also contained linoleic acid of 31.3％, 48.8％ and 53.4％, with a considerable amount of α-linolenic acid of 34.5％ 27.0％ and 16.7％. Palmitic acid was the major saturated fatty acid in all the oils investigated (4.1-14.2％). 4) Fatty acid profiles of neutral lipids bore a close resemblance to those of total lipids in all the seed oils, but different from those of glycolipids and phospholipids. Fatty acid composition pattern of glycolipids and phospholipids showed a considerably increased level of saturated fatty acids (19.0-66.8％, 17.8-35.2％) mainly composed of palmitic acid and stearic acid, and a noticeable low level of unsaturated fatty acids (41.2-80.9％, 64.7-82.1％) which was ascribed to the decrease in α-linolenic acid of high α-linolenic acid seed oils, and in linoleic acid of high linoleic seed oils, compared to that of total lipids and neutral lipids.
