Effects of Different Origins and Harvesting Time on Vitamin C, Tocopherols, and Tocotrienols in Sea Buckthorn (Hippophae rhamnoides) Berries
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- 作者：Heikki Kallio ; Baoru Yang ; and Pekka Peippo
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2002
- 出版时间：October 9, 2002
- 年：2002
- 卷：50
- 期：21
- 页码：6136 - 6142
- 全文大小：181K
- 年卷期：v.50,no.21(October 9, 2002)
- ISSN：1520-5118
文摘
Vitamin C, tocopherols, and tocotrienols in berries of wild and cultivated sea buckthorn (Hippophaërhamnoides L.) of different origins and harvesting dates were determined with HPLC. Wild berries ofsubsp. sinensis, native to China, contained 5-10 times more vitamin C in the juice fraction than theberries of subsp. rhamnoides from Europe and subsp. mongolica from Russia (4-13 vs 0.02-2 g/Ljuice). Genetic background and berry-harvesting date were two primary factors determining the vitaminC content in the berries. Crossing different subspecies influenced the vitamin C content to someextent. For bushes cultivated in southwest Finland, the best berry-harvesting date for high vitamin Ccontent was the end of August. The seeds of subsp. sinensis contained less tocopherols andtocotrienols (average 130 mg/kg) compared with seeds of subsp. rhamnoides (average 290 mg/kg)and mongolica (average 250 mg/kg). The fruit flesh of sinensis berries had contents of tocopherolsand tocotrienols 2-3 times higher than those found in the other two subspecies (120 mg/kg vs 40mg/kg in rhamnoides and 50 mg/kg in mongolica). The fresh whole berries of subsp. sinensis wereclearly the best source of total tocopherols and tocotrienols. The total content of tocopherols andtocotrienols in the soft parts of the berries reached the maximum level around early- to mid-September,whereas the content in seeds continued to increase until the end of November. The excellentcombination of the highest content of vitamin C and tocopherols and tocotrienols makes the berriesof subsp. sinensis an optimal raw material for nutritional investigation as a candidate for functionalfoods with special antioxidative properties.Keywords: Sea buckthorn; Hippophaë rhamnoides; vitamin C; tocopherols and tocotrienols; seeds;fruit flesh; origins; harvesting time