CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (5): 843-.doi: 10.19802/j.issn.1007-9084.2019280

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Evaluation for Akebia trifoliata(Thunb.)Koidz. var. australis(Diels)Rehd. germplasm resources based on physicochemical property and fatty acid components of seed oil


  1. 1. Agricultural College of Guizhou University, Guiyang, 550025, China; 2. Teaching Experimental Field of Guizhou University, guiyang 550025, China; 3. Guizhou Key Laboratory for Propagation and Cultivation of Medicinal Plants,Guiyang, 550025, China; 4. Guizhou Kekangli Biotechnology limited-libihty Company, Guiyang 550025, China; 5.Agricultural College of Sichuan Agricultural University, Wenjiang, 611130, China; 6. Tian Di Zai Ecological Agricul⁃ ture Co., Ltd in Chengdu city, Cheng du, 610000, China
  • Online:2020-10-28 Published:2020-09-17

Abstract: Screening A. trifoliata(Thunb.)Koidz. var. australis(Diels)Rehd. germplasm suited for edible oil
so as to provide reference for developing new oil crop. Seed oil of A. trifoliata(Thunb.)Koidz. var. australis(Diels)
Rehd. germplasms was extracted by soxhlet extraction, and oil ratio among germplasms was compared. Peroxide val⁃
ue, acid value, iodine value and saponification value were detected according to national standard of edible oil,
meanwhile, seed oil fatty acid composition of A. trifoliata(Thunb.)Koidz. var. australis(Diels)Rehd. germplasms
was tested through GC-MS system. The results showed that economic characteristics of A. trifoliata (Thunb.)
Koidz. var. australis(Diels)Rehd. germplasm seed including oil ratio(36.57%~43.08%), average seed content of
single fruit(6.60%~11.51%), weight of 1000-seeds(45.63~58.95g) and drying rate(51.93%~64.28%) were
mainly affected by environmental factors. The peroxide value(0.073~0.126 mmol/kg), acid value(0.418~1.337
mgKOH/g), iodine value(83.548~89.653 g/100g)and saponification value(199.485~221.418 mg/g)reached the
national standard of grade 4 edible oil. Most components of seed fatty acid were saturated fatty acid, but the unsatu⁃
rated fatty acid content was the highest. Unsaturated fatty acid mainly included oleic acid and linoleic acid, which
accounted for ~70% in seed fatty acid; while saturated fatty acid mainly consists of palmitic acid and stearic acid,
about ~25% in seed fatty acid.A. trifoliata(Thunb.)Koidz. var. australis(Diels)Rehd. has the potential as new
type of oil crop. A. trifoliata(Thunb.)Koidz. var. australis(Diels)Rehd. germplasm Qiantong No.1 showed higher
value among 5 studied germplasms and could be further exploited based on its seed economic characteristics and
seed oil fatty acid composition.

Key words: Akebia trifoliata(Thunb.)Koidz. var. australis(Diels)Rehd., seed oil, germplasm resources, fatty acid

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