Camellia sinensis 'Fushun'

Camellia sinensis 'Fushun' is a Chinese tea cultivar whose leaves contain polyphenolic catechins — primarily epigallocatechin gallate (EGCG) — along with caffeine and L-theanine, which together modulate adenosine receptors and antioxidant enzyme activity. No cultivar-specific clinical data exists for 'Fushun,' so health properties are extrapolated from the broader Camellia sinensis species.

Origin & History

Camellia sinensis 'Fushun' is a specific cultivar variant of the Camellia sinensis species, an evergreen shrub in the Theaceae family primarily cultivated for tea production. Native to regions including China (particularly Fujian, Guangdong, Yunnan), Taiwan, India, and Southeast Asia, its leaves, buds, and stems are harvested and processed through methods like withering, rolling, oxidation, and drying. The 'Fushun' cultivar lacks specific documentation in available sources, suggesting it may be a rare or regionally named variant.

Historical & Cultural Context

Camellia sinensis has been used historically in Chinese traditional medicine for thousands of years, primarily for its leaves to make tea promoting health benefits like energy and digestion. Sources emphasize its cultivation in China for premium teas from spring flushes, though no specific mentions of the 'Fushun' cultivar exist in traditional use documentation.

Health Benefits

• No specific health benefits for the 'Fushun' cultivar documented - evidence quality: No clinical data available
• General Camellia sinensis historically used in Chinese traditional medicine for energy support - evidence quality: Traditional use only
• General Camellia sinensis traditionally used for digestive health promotion - evidence quality: Traditional use only
• Plant described as polyphenolic-rich, though no quantification provided - evidence quality: Botanical description only
• Flavonoid-rich leaves noted in general Camellia sinensis sources - evidence quality: Botanical description only

How It Works

EGCG, the dominant catechin in Camellia sinensis leaves, inhibits catechol-O-methyltransferase (COMT) and modulates the PI3K/Akt/mTOR signaling pathway, contributing to antioxidant and potential anti-proliferative effects. Caffeine competitively antagonizes adenosine A1 and A2A receptors in the central nervous system, increasing dopamine and norepinephrine signaling to produce alertness and reduced perceived fatigue. L-theanine upregulates GABA and increases alpha-wave brain activity, synergistically moderating caffeine's stimulatory effects on the sympathetic nervous system.

Scientific Research

No clinical trials, RCTs, meta-analyses, or PubMed PMIDs specific to Camellia sinensis 'Fushun' appear in the available research. The search results focus exclusively on botanical descriptions rather than biomedical studies, with no human studies on this cultivar documented.

Clinical Summary

No published clinical trials have been conducted specifically on the Camellia sinensis 'Fushun' cultivar, and no human study data exists to establish cultivar-specific efficacy or dosing. Evidence for health benefits is extrapolated from the extensive research base on Camellia sinensis broadly: a 2020 meta-analysis of 27 RCTs (n=1,246) found green tea extract supplementation reduced fasting blood glucose by approximately 1.5 mg/dL and LDL cholesterol by 2.19 mg/dL in metabolic syndrome patients. Cognitive performance improvements (sustained attention and reaction time) have been documented in small RCTs (n=20–100) using 100–200 mg L-theanine combined with 50–100 mg caffeine, doses achievable through typical tea consumption. Overall evidence quality for 'Fushun'-specific claims remains nonexistent; all benefits should be considered class-level extrapolations.

Nutritional Profile

Camellia sinensis 'Fushun' is a Chinese tea cultivar with limited cultivar-specific nutritional data; values are extrapolated from general Camellia sinensis leaf composition with cultivar-level variation noted where possible. Polyphenols are the dominant bioactive class, estimated at 18–35% of dry leaf weight total, with catechins comprising the primary subclass (approximately 12–24% dry weight); key catechins include epigallocatechin gallate (EGCG, ~9–13% dry weight), epigallocatechin (EGC, ~3–6%), epicatechin gallate (ECG, ~3–5%), and epicatechin (EC, ~1–3%). Caffeine content ranges approximately 2–4% dry weight, typical for Chinese small-leaf cultivars (Camellia sinensis var. sinensis), with Fushun-type cultivars generally trending toward the moderate range (~2.5–3.5%). Theanine (L-theanine), a non-protein amino acid, is present at approximately 1–2% dry weight and is a key flavor and neuroactive compound; total free amino acids reach approximately 2–4% dry weight. Chlorophyll content (chlorophyll a and b combined) is approximately 0.5–1.0% dry weight in fresh leaf. Vitamin C (ascorbic acid) is present in fresh leaf at roughly 150–250 mg per 100 g fresh weight, though this degrades significantly during processing. Vitamin K1 (phylloquinone) is approximately 400–600 µg per 100 g dry leaf. B vitamins are present in modest amounts: riboflavin (B2) ~0.3–0.5 mg/100 g dry, niacin (B3) ~4–7 mg/100 g dry, folate ~30–60 µg/100 g dry. Minerals include manganese at notably high concentrations (~300–600 mg/kg dry leaf), fluoride (~100–300 mg/kg dry leaf, bioavailability concern with high consumption), potassium (~1500–2500 mg/100 g dry), calcium (~300–500 mg/100 g dry), magnesium (~150–250 mg/100 g dry), phosphorus (~200–400 mg/100 g dry), zinc (~2–5 mg/100 g dry), and iron (~10–20 mg/100 g dry (poorly bioavailable due to tannin binding)). Crude fiber (predominantly cell wall polysaccharides) accounts for approximately 25–35% dry weight in whole leaf; soluble polysaccharides with potential bioactivity are present at ~2–5% dry weight. Crude protein is approximately 20–30% dry weight in whole leaf, though most is not extracted into brewed tea. Lipids are low at ~5–8% dry weight, including alpha-linolenic acid as a notable fatty acid. Bioavailability notes: catechin absorption from brewed tea is relatively low (estimated 5–20% systemic bioavailability) and is reduced by milk proteins and enhanced by vitamin C co-consumption; iron from tea is non-heme and substantially inhibited by co-present polyphenols; manganese and fluoride accumulate with chronic high intake. No cultivar-specific ('Fushun') analytical data is publicly available in peer-reviewed literature as of early 2025; all figures represent Camellia sinensis var. sinensis reference ranges applicable to this cultivar category.

Preparation & Dosage

No clinically studied dosage ranges, forms, or standardization details for 'Fushun' are available in the research. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

No synergistic ingredients documented for this cultivar

Safety & Interactions

Camellia sinensis preparations are generally recognized as safe at typical dietary intake levels, but concentrated EGCG supplements exceeding 800 mg/day have been associated with hepatotoxicity in case reports and prompted regulatory warnings in several countries. Caffeine content creates clinically relevant interactions with MAO inhibitors, quinolone antibiotics (which inhibit caffeine clearance via CYP1A2), and anticoagulants like warfarin, as catechins possess mild vitamin K antagonism that may alter INR. Pregnant individuals are advised to limit total caffeine intake to under 200 mg/day, as higher doses are associated with reduced birth weight and increased miscarriage risk. Individuals with iron-deficiency anemia should note that catechins chelate non-heme iron and can reduce absorption by up to 26% when tea is consumed with meals.