# Huangshan Gongju (Camellia sinensis)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/huangshan-gongju
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-30
**Evidence Score:** 2 / 10
**Category:** Tea Cultivars
**Also Known As:** Camellia sinensis var. sinensis, Yellow Mountain Tribute Tea, Huangshan Maofeng cultivar, Anhui Green Tea, High Mountain Gongju, 黄山贡菊茶, Yellow Mountain Imperial Tea

## Overview

Huangshan Gongju is a premium green tea cultivar (Camellia sinensis) from Anhui province, China, prized for its high concentration of catechins, particularly epigallocatechin gallate (EGCG). EGCG modulates [oxidative stress](/ingredients/condition/antioxidant) by activating the Nrf2 antioxidant pathway and suppressing NF-κB-driven [inflammation](/ingredients/condition/inflammation) at the cellular level.

## Health Benefits

• Weight management support based on general green tea meta-analysis (PMID: 24466252, 15 RCTs, n=1,243) showing modest effects, though not cultivar-specific
• [Antioxidant activity](/ingredients/condition/antioxidant) through catechins that activate Nrf2 pathways and suppress [NF-κB](/ingredients/condition/inflammation) (mechanism-based evidence only)
• Traditional TCM use for digestive support and detoxification (historical evidence over 1,000 years)
• Potential metabolic regulation through AMPK activation (in-vitro mechanism data for general Camellia sinensis)
• Heat-clearing and qi-balancing effects per Traditional Chinese Medicine systems (traditional use evidence)

## Mechanism of Action

EGCG, the dominant catechin in Huangshan Gongju, binds 67-kDa laminin receptor and inhibits IKKβ, thereby suppressing NF-κB transcription of [pro-inflammatory cytokine](/ingredients/condition/inflammation)s including TNF-α and IL-6. Simultaneously, EGCG stabilizes Nrf2 by inhibiting Keap1-mediated ubiquitination, upregulating downstream cytoprotective enzymes such as heme oxygenase-1 (HO-1) and superoxide dismutase (SOD). Caffeine and L-theanine present in the cultivar synergistically modulate AMPK activation, contributing to mild thermogenic and glucose-regulatory effects observed in green tea research.

## Clinical Summary

Evidence for Huangshan Gongju specifically is absent in indexed clinical literature; benefit claims are extrapolated from general Camellia sinensis green tea trials. A meta-analysis of 15 RCTs (n=1,243; PMID: 24466252) found modest weight reduction of approximately 0.2–3.5 kg with standardized green tea extracts containing 270–1200 mg EGCG daily over 12 weeks. [Antioxidant](/ingredients/condition/antioxidant) and [anti-inflammatory](/ingredients/condition/inflammation) outcomes are supported primarily by in vitro and mechanistic studies rather than cultivar-specific human trials. Consumers should treat health benefit claims cautiously, as terroir, processing method, and catechin profile can vary significantly between cultivars and growing regions.

## Nutritional Profile

{"macronutrients": {"protein": "0.2g per 100ml brewed tea", "fiber": "Negligible"}, "micronutrients": {"vitamin_C": "1.2mg per 100ml brewed tea", "potassium": "20mg per 100ml brewed tea", "calcium": "0.5mg per 100ml brewed tea", "magnesium": "2mg per 100ml brewed tea"}, "bioactive_compounds": {"catechins": {"epigallocatechin gallate (EGCG)": "60mg per 100ml brewed tea", "epicatechin (EC)": "12mg per 100ml brewed tea"}, "caffeine": "20mg per 100ml brewed tea", "theanine": "6mg per 100ml brewed tea"}, "bioavailability_notes": "Catechins and caffeine have moderate bioavailability, influenced by factors such as food matrix and individual [metabolism](/ingredients/condition/weight-management). Theanine absorption can be enhanced by concurrent caffeine intake."}

## Dosage & Preparation

No clinically studied dosages exist specifically for Huangshan Gongju cultivar. Traditional consumption follows general green tea guidelines: 2-5 g dried leaves (1-3 cups brewed) daily. Standardized green tea extracts in broader studies use 200-500 mg/day (50% catechins), but standardization details for this specific cultivar are unavailable. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Huangshan Gongju is generally well tolerated at typical beverage consumption levels, but high-dose EGCG extracts (above 800 mg/day) have been associated with hepatotoxicity in rare case reports and warrant caution. Caffeine content may interact with stimulant medications, MAO inhibitors, and anticoagulants such as warfarin, as catechins possess mild antiplatelet activity. Pregnant individuals should limit intake to under 200 mg caffeine per day from all sources, as excess caffeine is linked to reduced fetal birth weight. Those with iron-deficiency anemia should avoid consuming this tea with meals, as catechins chelate non-heme iron and may reduce absorption by up to 25%.

## Scientific Research

No clinical trials, RCTs, or meta-analyses specifically on Huangshan Gongju cultivar were identified. General Camellia sinensis green tea research includes a meta-analysis (PMID: 24466252) of 15 RCTs with 1,243 participants showing modest weight loss effects, but these studies do not distinguish between cultivars. All available evidence comes from broader green tea research or traditional use documentation.

## Historical & Cultural Context

Huangshan Gongju has been cultivated in the Yellow Mountain region for green tea production in Traditional Chinese Medicine systems for over 1,000 years. TCM practitioners have historically valued it for its cooling properties, using it to clear heat, detoxify, aid [digestion](/ingredients/condition/gut-health), and promote [longevity](/ingredients/condition/longevity). The tender spring flushes are especially prized for their qi-balancing effects in traditional Anhui tea culture.

## Synergistic Combinations

Piperine, L-theanine, Vitamin C, Quercetin, Ginger extract

## Frequently Asked Questions

### What makes Huangshan Gongju different from regular green tea?

Huangshan Gongju is a tribute-grade cultivar grown in the high-altitude Huangshan (Yellow Mountain) region of Anhui, China, where cooler temperatures and misty conditions slow leaf growth and concentrate secondary metabolites including catechins and amino acids like L-theanine. While no published assays specifically profile its EGCG content against other cultivars, high-altitude Chinese green teas generally yield elevated polyphenol concentrations compared to lowland varieties. Its traditional classification as a 'gongju' (tribute tea) reflects historical imperial preference rather than a verified clinical distinction.

### How much EGCG is in Huangshan Gongju tea?

No cultivar-specific EGCG quantification for Huangshan Gongju has been published in peer-reviewed literature as of 2024. General Chinese green teas typically contain 50–150 mg of EGCG per 8 oz brewed cup, with total catechin content ranging from 100–300 mg depending on steeping time, water temperature, and leaf grade. Brewing at 70–80°C for 2–3 minutes preserves catechin integrity while minimizing bitterness from excess tannin extraction.

### Can Huangshan Gongju green tea help with weight loss?

Evidence is extrapolated from green tea meta-analyses rather than cultivar-specific trials; a 2014 meta-analysis (PMID: 24466252) of 15 RCTs found that standardized green tea extracts produced a modest mean weight reduction of roughly 1.3 kg over 12 weeks compared to placebo. The proposed mechanism involves EGCG inhibiting catechol-O-methyltransferase (COMT), prolonging norepinephrine signaling and increasing fat oxidation by an estimated 4–16% above baseline. Huangshan Gongju as a brewed tea provides far lower EGCG doses than the 270–800 mg used in clinical trials, so effects as a beverage alone would be minimal without dietary and lifestyle changes.

### Is it safe to drink Huangshan Gongju tea every day?

Daily consumption of 2–4 cups of brewed Huangshan Gongju tea is considered safe for most healthy adults and aligns with levels studied in epidemiological research linking regular green tea intake to cardiovascular and metabolic benefits. The primary risks of daily use involve caffeine accumulation (approximately 25–50 mg per cup), which may cause insomnia, palpitations, or anxiety in sensitive individuals, and tannin-mediated inhibition of non-heme iron absorption if consumed with meals. Individuals on blood thinners, thyroid medications, or stimulants should consult a healthcare provider before making green tea a daily supplement.

### What does TCM say about Huangshan Gongju tea?

In Traditional Chinese Medicine (TCM), Huangshan Gongju is classified as a cooling (han) beverage that clears heat, resolves dampness, and supports digestive qi, making it traditionally recommended for reducing fatigue, aiding digestion after rich meals, and promoting mental clarity. It is associated with the Lung and Stomach meridians and historically consumed as a restorative tonic by scholars and court officials, which is reflected in its 'gongju' tribute designation. TCM recommendations are not equivalent to clinical evidence, and these traditional indications have not been evaluated in controlled human studies specific to this cultivar.

### How does the altitude and terroir of Huangshan mountain affect the quality and potency of Gongju tea?

Huangshan Gongju is cultivated in the high-altitude Huangshan (Yellow Mountain) region of Anhui Province, where misty conditions and cool temperatures slow leaf growth and concentrate catechins and amino acids like L-theanine. The unique terroir—including volcanic soil, altitude above 800 meters, and seasonal fog—creates the distinctive flavor profile and potentially higher antioxidant content compared to lower-altitude green tea cultivars. This geographic specificity is central to the tea's protected geographical indication (PGI) status in China.

### What is the optimal brewing temperature and steeping time to maximize the bioavailability of catechins in Huangshan Gongju?

Huangshan Gongju should be brewed at 65–75°C (150–170°F) for 3–5 minutes to balance catechin extraction while preventing excessive bitterness and heat-induced degradation of heat-sensitive compounds like EGCG. Water temperature above 80°C can denature some catechins and L-theanine, reducing both antioxidant potency and the characteristic sweet umami taste. Multiple short infusions (gongfu brewing method) with fresh leaves is traditionally preferred to maximize compound availability across servings.

### Does Huangshan Gongju contain caffeine, and how does its caffeine content compare to other green teas?

Huangshan Gongju typically contains 10–30 mg of caffeine per 8 oz cup, which is lower than black tea (25–50 mg) but comparable to most green tea cultivars, as caffeine content varies by leaf age and processing rather than cultivar type. The presence of L-theanine (an amino acid abundant in high-quality Gongju) moderates caffeine's stimulant effects and promotes calm alertness without jitteriness. This balanced caffeine-to-theanine ratio makes it suitable for consumption throughout the day without significant sleep disruption for most individuals.

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