Twelve pumpkin cultivars (Cucurbita maxima D.), cultivated in Iowa, were studied for their seed oil
content, fatty acid composition, and tocopherol content. Oil content ranged from 10.9 to 30.9%. Total
unsaturated fatty acid content ranged from 73.1 to 80.5%. The predominant fatty acids present were
linoleic, oleic, palmitic, and stearic. Significant differences were observed among the cultivars for
stearic, oleic, linoleic, and gadoleic acid content of oil. Low linolenic acid levels were observed (<1%).
The tocopherol content of the oils ranged from 27.1 to 75.1 μg/g of oil for α-tocopherol, from 74.9 to
492.8 μg/g for γ-tocopherol, and from 35.3 to 1109.7 μg/g for δ-tocopherol. The study showed potential
for pumpkin seed oil from all 12 cultivars to have high oxidative stability that would be suitable for
food and industrial applications, as well as high unsaturation and tocopherol content that could
potentially improve the nutrition of human diets.
Keywords: Pumpkin seed oil; pumpkin seed; oilseed; winter squash; Cucurbitaceae; fatty acid;
tocopherol
We describe the key policy and educational opportunities in the United States to address and potentially overcome the barriers to greater integration of palliative care into the healthcare of Americans with serious illness.
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