Journal
FOOD CHEMISTRY
Volume 216, Issue -, Pages 87-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.08.032
Keywords
HILIC; Hippophae rhamnoides; Latitude; Overripe; Proanthocyanidins; Sea buckthorn; ssp rhamnoides; Varieties; Weather conditions
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Sea buckthorn (Hippophae rhamnoides ssp. rhamnoides) of varieties 'Terhi' and 'Tytti' and one of wild origin were cultivated in southern and northern Finland, harvested during 2007-2013. Proanthocyanidins (PM) were analyzed with HILIC UPLC-ESI-MS. The southern and northern samples were separated in the partial least squares discriminant analysis model (four factors, R-2 0.75, Q(2) 0.70). The total PAs were more abundant in berries from the north (610-970 mg/100 g DW) than in those from the south (340-450 mg/100 g DW) (p < 0.05). In northern Finland, the length of the growth season as well as the temperature sum and radiation sum of the growth season until harvest were negatively correlated with the total PM in all the samples but positively with PA oligomers in 'Tytti' and 'Terhi'. In southern Finland no respective correlations were seen. 'Terhi' and 'Tytti' had different trends in the content of total PA and oligomers in overripe stages. (C) 2016 Elsevier Ltd. All rights reserved.
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