Sea buckthorn’s nutrition story splits in two. The berry flesh gives you vitamin C, carotenoids, and the rare omega-7 fatty acid. The seed gives you a balanced omega-3 and omega-6 oil with almost no omega-7. Most marketing blurs that line. We keep it sharp, because which part you buy decides which nutrients you get. The pages below take the nutrients one at a time.
Nutrition claims for this plant range from well measured to wildly inflated. This hub keeps the sourced numbers and flags the slippery ones. If you read one nutrition page, make it the seed oil versus berry oil breakdown: one plant, two completely different oils, and every product decision downstream depends on which one you are buying.
How to read these pages
The pages in this cluster answer the same three questions. What does the plant contain, with the published range and its source? What survives into each form: fresh, dried, juice, oil, tea? And what does a real serving deliver, measured against your daily needs rather than a lab assay? Pages that answer all three give you the whole picture. Numbers without a plant part, a form, and a serving attached are exactly the marketing this hub exists to catch.
The headline nutrients
- Vitamin C. The berry is legitimately rich, with reported ranges of about 53 to 400 mg per 100 g, depending on variety and where it grew. Heat, drying, and storage can cost vitamin C, and the one processing analysis we cite measured juice and concentrate only, so juice numbers and fresh-berry numbers are different conversations.
- Carotenoids. The source of the famous orange. Beta-carotene, lycopene, and zeaxanthin show up in meaningful amounts in berry oil. They also explain why it stains your skin and your countertop.
- Palmitoleic acid (omega-7). Berry oil carries about 30 to 35 percent palmitoleic acid in a 2017 review and 30 to 40 percent on commercial labels, with wide swings by subspecies, rare among plant oils. It’s the fatty acid behind most of the interest in the oil, though the human trials tested whole oil, berry puree or extracts, not omega-7 on its own.
- Omega-3 and omega-6. The seed oil’s strength, in a ratio close to 1:1, which is unusual and genuinely useful.
- Flavonoids and vitamin E. Present in both oils, with published figures putting more vitamin E in the seed oil.
The numbers to distrust
Any label or blog quoting a single vitamin C figure without naming the variety, plant part, and test method is copying someone else’s homework. Same for ORAC antioxidant scores, which the USDA stopped endorsing years ago. When we cite composition numbers, they come from the peer-reviewed analyses listed in our research hub.
From nutrients to doses
Knowing what is in the plant is step one. Step two is knowing how much people actually took in the trials, which is a dosage question. Step three is picking a product whose label matches, which is what our oil guide is for.
What the studies measured
- In eight subsp. mongolica cultivars, total carotenoids ran 6.19 to 23.91 mg per 100 g fresh berries, and flavonols averaged 311.55 mg, mostly isorhamnetin and quercetin glycosides (Teleszko 2015).
- Juice pressed from seven varieties held 29 to 176 mg of vitamin C, 3.1 to 5.1 g of malic and quinic acids, 1.9 to 7.1 g of sugar and 0.7 to 3.6 percent pulp oil per 100 mL (Tiitinen 2005).
- By subspecies, seeds averaged 130 (sinensis), 290 (rhamnoides) and 250 (mongolica) mg of tocopherols and tocotrienols per kg, and fruit flesh 120, 40 and 50 mg per kg (Kallio 2002).
- Whole berries of six subsp. carpatica cultivars held 45 to 84 g of oil per kg fresh weight, which is 4.5 to 8.4 percent, and seeds 106 to 135 g per kg (Dulf 2012).
Frequently asked questions
What nutrients are in sea buckthorn?
The berries carry vitamin C (amounts vary enormously by variety and processing), carotenoids that give the orange color, and flavonoids. Berry oil is one of the richest sources of palmitoleic acid (omega-7). Seed oil contains almost no omega-7 but is rich in omega-3 and omega-6.
Which sea buckthorn nutrient stands out most?
Two share the podium. Vitamin C is the quantity story: fresh berries carry about 53 to 400 mg per 100 g, up to several times an orange by weight, though processing can cost some and the one analysis we cite measured juice and concentrate only. Omega-7 is the rarity story: berry oil is among the richest known plant sources of palmitoleic acid. Everything else the plant offers is real but available from more ordinary foods.
Illustration.