# Dian Hong Golden Needle (Camellia sinensis)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/dian-hong-golden-needle
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-01
**Evidence Score:** 2 / 10
**Category:** Tea Cultivars
**Also Known As:** Camellia sinensis, Dianhong Golden Needle, Yunnan Golden Needle Tea, Dian Hong Jin Zhen, Golden Tip Dianhong, Yunnan Golden Tip Black Tea, DHGN, Golden Needle Black Tea

## Overview

Dian Hong Golden Needle is a premium Yunnan black tea (Camellia sinensis) whose bioactive theaflavins, thearubigins, and polyphenolic catechins drive its primary [hepatoprotective](/ingredients/condition/detox) and lipid-lowering effects. These compounds modulate oxidative stress pathways and inhibit hepatic lipid accumulation by suppressing key enzymes involved in cholesterol biosynthesis and [lipid peroxidation](/ingredients/condition/antioxidant).

## Health Benefits

• Liver protection: Reduced serum ALT by 47-52% and AST by 45-52% in alcohol-induced liver injury rat models (p<0.0001) - preliminary evidence only
• Lipid [metabolism](/ingredients/condition/weight-management) support: Significantly decreased total cholesterol, triglycerides, and LDL-C in animal studies (p<0.01) - preliminary evidence only
• Hepatic fat accumulation prevention: More effective than Keemun black tea in reducing fat accumulation in high-fat diet rat models - preliminary evidence only
• Liver cell preservation: Alleviated hepatic necrosis and lipid droplet formation via histopathology (p<0.01) - preliminary evidence only
• PPAR pathway modulation: Regulates lipid metabolism proteins FASD, CD36, and ACAA1 (p<0.05) - preliminary mechanistic evidence only

## Mechanism of Action

Theaflavins and thearubigins in Dian Hong Golden Needle scavenge [reactive oxygen species](/ingredients/condition/antioxidant) and suppress lipid peroxidation by inhibiting cytochrome P450 2E1 (CYP2E1), a key enzyme activated during alcohol-induced hepatotoxicity. These polyphenols also downregulate HMG-CoA reductase activity, reducing endogenous cholesterol synthesis, while activating AMPK signaling to promote fatty acid oxidation and inhibit triglyceride accumulation in hepatocytes. Additionally, catechins such as epicatechin gallate (ECG) chelate metal ions that catalyze free radical generation, providing a secondary antioxidant mechanism at the cellular level.

## Clinical Summary

Current evidence for Dian Hong Golden Needle is limited to preclinical animal models, with no peer-reviewed human clinical trials published as of 2024. In alcohol-induced liver injury rat models, standardized aqueous extracts significantly reduced serum alanine aminotransferase (ALT) by 47–52% and aspartate aminotransferase (AST) by 45–52% versus untreated controls (p<0.0001). Separate rodent studies demonstrated statistically significant reductions in total cholesterol, triglycerides, and LDL-C (p<0.01), though effect sizes and dosing protocols varied across studies. The translation of these findings to human populations remains unestablished, and all health claims must be considered preliminary pending controlled clinical investigation.

## Nutritional Profile

Dian Hong Golden Needle is a premium Yunnan black tea made from fine golden buds of large-leaf Camellia sinensis var. assamica cultivars. As a brewed tea, it is essentially calorie-free (~1-2 kcal per 240 mL serving) with negligible macronutrient content. Key bioactive compounds and micronutrients include: **Polyphenols & Flavonoids:** Total polyphenol content approximately 12-18% of dry leaf weight; theaflavins (TF) ~0.8-1.5% dry weight (notably theaflavin-3,3'-digallate, theaflavin-3-gallate, theaflavin-3'-gallate); thearubigins ~6-12% dry weight; residual catechins (EGCG, ECG, EGC) ~1-3% dry weight (lower than green tea due to oxidation). **Alkaloids:** Caffeine ~2.5-4.0% dry weight (~40-70 mg per 240 mL brewed serving); theobromine ~0.15-0.3% dry weight; theophylline (trace). **Amino acids:** L-theanine ~0.5-1.5% dry weight (~8-25 mg per serving), contributing to the characteristic mellow sweetness; total free amino acids ~2-4% dry weight. **Polysaccharides:** Tea polysaccharides ~2-5% dry weight, associated with the lipid-lowering and [hepatoprotective](/ingredients/condition/detox) effects noted in animal studies. **Minerals (per 240 mL brewed):** Potassium ~30-50 mg; manganese ~0.3-0.7 mg (~15-30% DV, high bioavailability from tea infusion); fluoride ~0.1-0.3 mg; magnesium ~3-7 mg; zinc ~0.02-0.05 mg; trace amounts of iron, copper, selenium, and chromium. Yunnan large-leaf cultivars tend to have higher mineral content than small-leaf varieties. **Vitamins:** Trace amounts of B-vitamins (riboflavin ~0.01 mg, niacin ~0.1 mg per serving); vitamin C is largely destroyed during full oxidation and is negligible. **Volatile aroma compounds:** Rich in linalool, geraniol, methyl salicylate, and β-ionone, contributing to the honey-sweet, malty flavor profile characteristic of golden needle grades. **Bioavailability notes:** Theaflavins have lower oral bioavailability (~1-5%) than catechins due to larger molecular size and gut [metabolism](/ingredients/condition/weight-management), though they exert significant activity in the gastrointestinal tract. L-theanine has high oral bioavailability (~~nearly complete absorption). Caffeine bioavailability is ~99%. Manganese from tea is well absorbed (~5-10%). The tannin content (thearubigins, theaflavins) can inhibit non-heme iron absorption by 60-70% when consumed with meals. Polysaccharide bioactivity may be partly mediated through gut microbiota fermentation. The golden bud material used in Golden Needle grades tends to have higher amino acid and lower tannin content compared to mature-leaf Dian Hong, resulting in smoother taste and potentially improved theanine delivery.

## Dosage & Preparation

No human dosage data available. Animal studies used DBTVS at 0.45 mL/kg (low dose) to 9 mL/kg (high dose) via gavage for 9 days. No standardized extract, powder, or human-equivalent doses have been established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

As a black tea preparation, Dian Hong Golden Needle contains caffeine (estimated 40–70 mg per 250 mL serving), which may cause [insomnia](/ingredients/condition/sleep), tachycardia, or anxiety in sensitive individuals or at high intake. Its polyphenols can chelate non-heme iron and reduce absorption by up to 70% when consumed with meals, posing a risk for individuals with iron-deficiency anemia. Theaflavins may additively potentiate the effects of anticoagulants such as warfarin by inhibiting platelet aggregation, warranting caution and INR monitoring in patients on anticoagulant therapy. Pregnant and breastfeeding women should limit consumption to moderate amounts (≤200 mg caffeine/day total) due to caffeine's association with adverse fetal outcomes at higher doses.

## Scientific Research

Current evidence for Dian Hong Golden Needle is limited to preclinical animal studies with no human clinical trials, RCTs, or meta-analyses available. Key research includes a randomized rat study (n=50) examining alcohol-induced liver injury with DBTVS at 0.45-9 mL/kg doses, and a comparative study against Keemun black tea for hepatic fat accumulation (no PMIDs provided in research dossier).

## Historical & Cultural Context

Dianhong black tea, including Golden Needle variants, has roots in Chinese traditional medicine for liver protection and lipid regulation. It aligns with broader Traditional Chinese Medicine use of Camellia sinensis teas for detoxification and metabolic balance, though specific historical duration or traditional formulas are not documented.

## Synergistic Combinations

Green tea extract, Milk thistle, Curcumin, Alpha-lipoic acid, Artichoke extract

## Frequently Asked Questions

### What makes Dian Hong Golden Needle different from regular black tea?

Dian Hong Golden Needle is harvested exclusively from large-leaf Camellia sinensis var. assamica cultivars in Yunnan province, China, using only unopened buds, which concentrate theaflavins and thearubigins at higher densities than standard broken-grade black teas. The full-bud harvest and specific oxidation process result in a distinct polyphenol profile with a higher theaflavin-to-thearubigin ratio, which may account for its comparatively pronounced antioxidant activity observed in laboratory assays.

### How much Dian Hong Golden Needle tea is needed for liver protection benefits?

No human clinical dosing has been established for liver protection, as all current evidence derives from rat models where hepatoprotective effects were observed using standardized polyphenol extracts equivalent to relatively high concentrations. Translating animal study doses to human equivalents using body surface area scaling suggests a theoretical dose range of 400–800 mg of total polyphenols daily, though this has not been validated in human trials and should not be used as a clinical recommendation.

### Does Dian Hong Golden Needle tea lower cholesterol?

Preclinical animal studies show statistically significant reductions in total cholesterol, LDL-C, and triglycerides (p<0.01) attributed to theaflavin-mediated inhibition of HMG-CoA reductase and AMPK pathway activation. However, no human randomized controlled trials have confirmed these lipid-lowering effects specifically for Dian Hong Golden Needle, so it cannot currently be recommended as a cholesterol-lowering intervention in clinical practice.

### Can Dian Hong Golden Needle tea interact with medications?

Yes, its polyphenolic compounds may interact with anticoagulants like warfarin by inhibiting platelet aggregation, potentially increasing bleeding risk, and its caffeine content can amplify the stimulant effects of medications such as pseudoephedrine or certain antidepressants. Additionally, polyphenols can reduce the bioavailability of iron supplements and certain antibiotics like tetracyclines and fluoroquinolones when consumed concurrently, so a 1–2 hour separation between tea consumption and these medications is advisable.

### Is Dian Hong Golden Needle tea safe to drink every day?

For most healthy adults, moderate daily consumption of 2–4 cups (500–1000 mL) is generally considered safe and consistent with habitual black tea intake patterns studied in epidemiological research. Individuals with iron deficiency, caffeine sensitivity, anxiety disorders, arrhythmias, or those taking anticoagulant medications should consult a healthcare provider before making it a daily habit, as cumulative caffeine and polyphenol exposure may exacerbate these conditions.

### What is the evidence quality for Dian Hong Golden Needle's liver protection claims?

Current evidence for Dian Hong Golden Needle's liver protective effects comes primarily from rat models of alcohol-induced liver injury, where it reduced liver enzymes (ALT and AST) by 45-52%. However, this represents preliminary evidence only, and human clinical trials are needed to confirm these benefits translate to real-world liver health outcomes. The animal study results are statistically significant (p<0.0001) but cannot yet be considered definitive proof of efficacy in people.

### Who would benefit most from drinking Dian Hong Golden Needle tea?

Based on available research, Dian Hong Golden Needle may be most relevant for individuals concerned with liver health and lipid metabolism, though human evidence is limited. People interested in supporting cholesterol and triglyceride levels, or those with fatty liver concerns, represent potential beneficiaries of this tea. However, those with liver disease or taking hepatic medications should consult a healthcare provider before using it as a therapeutic supplement.

### How does Dian Hong Golden Needle compare to other black tea varieties for metabolic support?

Dian Hong Golden Needle has demonstrated superior effectiveness compared to Keemun black tea specifically in reducing hepatic fat accumulation in animal models. Both are black tea varieties from Camellia sinensis, but the cultivar and processing methods of Dian Hong may contribute to its enhanced performance in lipid metabolism studies. However, direct comparative human studies between these varieties remain absent, making it difficult to recommend one over the other for supplement purposes.

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