Sea buckthorn (Hippophae rhamnoides L.) vegetative parts as an unconventional source of lipophilic antioxidants.
The profile of lipophilic antioxidants in different vegetative parts (leaves, shoots, buds and berries) was studied in sea buckthorn (Hippophae rhamnoides L.) male and female plants collected in the end of spring. Five lipophilic compounds, i.e. three tocopherol homologues (α, β and γ), plastochromanol-8 and β-carotene, were identified in each vegetative part of male and female sea buckthorn plants at the following concentrations: 7.25-35.41, 0.21-2.43, 0.41-1.51, 0.19-1.79 and 4.43-24.57 mg/100 g dry weight basis. Additionally, significant amounts of α-tocotrienol (1.99 mg/100 g dry weight basis) were detected in buds. The α-tocopherol and β-carotene were predominant lipophilic antioxidants in each vegetative part, accounting for 78.3-97.0% of identified compounds. The greatest amounts of lipophilic antioxidants were found in leaves, especially of female plants. Nevertheless, apart from leaves, also shoots of plants of both sexes seem to be a good source of α-tocopherol and β-carotene.
Latvia State Institute of Fruit Growing, Graudu 1, Dobele LV-3701, Latvia.
Paweł
P
Górnaś
Latvia State Institute of Fruit Growing, Graudu 1, Dobele LV-3701, Latvia.
Elga
E
Šnē
Department of Food Biochemistry and Analysis, Poznan University of Life Sciences, Wojska Polskiego 48, 60-637 Poznan, Poland.
Aleksander
A
Siger
Latvia State Institute of Fruit Growing, Graudu 1, Dobele LV-3701, Latvia.
Dalija
D
Segliņa
DW, dry weight basis; Leaves; NP-HPLC/FLD/DAD, normal phase-high-performance liquid chromatograph/fluorescence detection/diode-array detection; PC-8, plastochromanol-8; Plant sex; Plastochromanol-8; SD, standard deviation; Sea buckthorn (Hippophae rhamnoides L.); Shoots; T, tocopherol; T3, tocotrienol; Tocopherols; β-Carotene