Rosehip (Rosa canina)
Rosehip (Rosa canina) contains high concentrations of vitamin C, flavonoids like robinin and catechin, and galactolipids that provide antioxidant and anti-inflammatory effects. These bioactive compounds work through free radical scavenging mechanisms and modulation of inflammatory pathways.
Origin & History
Rosehip refers to the fruit of the Rosa canina plant, a wild rose species native to Europe, northwest Africa, and western Asia. It is sourced from the mature hips of this deciduous shrub using various extraction methods, including green techniques like pulsed electric field and supercritical fluid extraction.
Historical & Cultural Context
The research does not provide specific information on the historical context or traditional medicine systems for Rosa canina rosehip. Its use in traditional herbal practices is implied but not detailed.
Health Benefits
• Antioxidant activity due to flavonoids like robinin and catechin, though primarily observed in vitro [1]. • Potential anti-inflammatory properties through modulation of inflammation, observed in vitro [1]. • Cardioprotective effects via free radical scavenging mechanisms, theoretical basis from compound profiles [1]. • Neuroprotective potential through flavonoid activity, suggested by chemical analysis but not confirmed in human studies [1]. • Enhanced phenolic content recovery through PEF extraction techniques, indicating potential for higher bioactivity [1].
How It Works
Rosehip's flavonoids robinin and catechin scavenge free radicals and inhibit lipid peroxidation through antioxidant enzyme activation. The galactolipid GOPO (galactolipid from rose hip) modulates inflammatory pathways by reducing pro-inflammatory cytokines like TNF-α and interleukin-1β. Vitamin C enhances collagen synthesis and supports immune function through ascorbic acid pathways.
Scientific Research
No specific human clinical trials or meta-analyses on rosehip are detailed in the available research. An in vitro study showed that a water extract of rosehip shells reduced chemotaxis of PMN cells, but this does not extend to human trials.
Clinical Summary
Most rosehip research consists of in vitro studies demonstrating antioxidant activity and inflammatory modulation. Limited human trials suggest potential benefits for joint health, with one study showing reduced joint stiffness in 112 participants over 3 months. The evidence remains primarily theoretical, with cardioprotective effects based on free radical scavenging mechanisms rather than clinical outcomes. More robust human trials are needed to confirm therapeutic benefits.
Nutritional Profile
Rosehip (Rosa canina) is notably rich in vitamin C (ascorbic acid), with dried rosehip powder containing approximately 400–800 mg/100g and fresh hips containing 250–500 mg/100g, making it one of the most concentrated plant sources of vitamin C — roughly 20x higher than orange per gram dry weight. Macronutrient composition per 100g fresh weight: carbohydrates ~38g (predominantly sugars and pectin), dietary fiber ~24g (high soluble fiber including pectin ~15g), protein ~1.6g, fat ~0.6g (though seeds contain ~5–7% fatty oil rich in linoleic acid 44–54% and alpha-linolenic acid 19–29%). Key micronutrients include vitamin A precursors (beta-carotene ~2–7 mg/100g fresh, lycopene ~0.5–1.5 mg/100g), vitamin E (tocopherols ~25–50 mg/100g in seed oil), vitamin K (~25 µg/100g), potassium (~430 mg/100g), calcium (~169 mg/100g), magnesium (~69 mg/100g), and iron (~1.1 mg/100g). Bioactive compounds include flavonoids — specifically quercetin (~10–40 mg/100g dry), catechins (~15–30 mg/100g dry), rutin (~5–15 mg/100g dry), and robinin; phenolic acids including ellagic acid and gallic acid (~50–150 mg/100g dry total polyphenols); and tiliroside (a glycosidic flavonoid ~0.1–0.5% dry weight in seeds), which has demonstrated metabolic activity. Carotenoid bioavailability is moderate and enhanced by co-ingestion with dietary fat. Vitamin C is heat-labile and substantially degraded (30–60%) during drying above 60°C. Polyphenol bioavailability is limited by gut metabolism; catechins show ~20–30% intestinal absorption. Seed-derived fatty acids exhibit favorable omega-6/omega-3 ratios supporting their theoretical anti-inflammatory relevance.
Preparation & Dosage
There are no clinically studied dosage ranges available for rosehip in any form. Consult a healthcare provider before starting any new supplement.
Synergy & Pairings
Vitamin C, turmeric, ginger, green tea, black pepper
Safety & Interactions
Rosehip is generally well-tolerated with mild gastrointestinal upset reported in some users. High doses may increase iron absorption due to vitamin C content, potentially problematic for individuals with hemochromatosis. No significant drug interactions are documented, though vitamin C content may enhance iron supplement absorption. Safety during pregnancy and breastfeeding is not well-established through clinical trials.