# Jin Xuan Milk Oolong (Camellia sinensis 'Jin Xuan')

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/jin-xuan-milk-oolong
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-24
**Evidence Score:** 2 / 10
**Category:** Tea Cultivars
**Also Known As:** Camellia sinensis var. Jin Xuan, TTES No. 12, Taiwan Tea No. 12, Milk Oolong, Nai Xiang Oolong, Golden Daylily Oolong, 27 Oolong

## Overview

Jin Xuan milk oolong is a Taiwanese tea cultivar containing polyphenols and catechins that demonstrate significant [anti-inflammatory](/ingredients/condition/inflammation) properties. Studies show it can reduce inflammatory cytokines IL-1β, IL-6, and TNF-α by 30-50% through NLRP3 inflammasome inhibition.

## Health Benefits

• May suppress [inflammation](/ingredients/condition/inflammation) by inhibiting NLRP3 inflammasome activation (>50% IL-1β reduction in preclinical studies)
• Potentially reduces inflammatory cytokines IL-6 and TNF-α (30-40% reduction in cell studies)
• Shows [antioxidant activity](/ingredients/condition/antioxidant) through reduction of intracellular ROS (~50% in macrophage cells)
• Contains polyphenolic compounds including flavonoids, tannins, and proanthocyanidins (preclinical evidence only)
• May modulate immune cell inflammatory responses through ASC oligomerization inhibition (preliminary in vitro data)

## Mechanism of Action

Jin Xuan milk oolong's polyphenols and catechins suppress inflammation by inhibiting NLRP3 inflammasome activation, preventing the release of [pro-inflammatory cytokine](/ingredients/condition/inflammation)s. The bioactive compounds reduce intracellular [reactive oxygen species](/ingredients/condition/antioxidant) (ROS) by approximately 50% in macrophages. This dual antioxidant and anti-inflammatory action occurs through modulation of NF-κB signaling pathways.

## Clinical Summary

Research on Jin Xuan milk oolong is primarily limited to preclinical cell culture and animal studies. In vitro studies demonstrate greater than 50% reduction in IL-1β levels and 30-40% decreases in IL-6 and TNF-α inflammatory markers. Macrophage studies show approximately 50% reduction in intracellular ROS levels. Human clinical trials are needed to confirm these [anti-inflammatory](/ingredients/condition/inflammation) effects and establish therapeutic dosing protocols.

## Nutritional Profile

Jin Xuan Milk Oolong is a lightly oxidized oolong tea (15-40% oxidation) with a characteristic creamy, milk-like aroma derived from the cultivar's natural terpene profile, not additives. Per 240ml brewed cup (2g dry leaf): Calories ~2-4 kcal, Carbohydrates ~0.5-1g, Protein ~0.1-0.3g, Fat negligible (<0.1g). Key bioactive compounds: Catechins/Flavan-3-ols 40-80mg per cup (lower than green tea due to partial oxidation), including EGCG ~15-30mg, EGC ~10-20mg, ECG ~8-15mg, EC ~5-10mg. Theaflavins and thearubigins present at low-moderate levels (~5-20mg combined) due to partial oxidation distinguishing it from fully oxidized black tea. Caffeine ~20-40mg per cup (moderate, lower than fully oxidized oolongs). L-theanine ~8-20mg per cup, contributing to umami character and synergistic calming-alertness effect with caffeine. Polyphenols total ~150-250mg per cup including flavonols (quercetin, kaempferol, myricetin as glycosides ~5-15mg combined), proanthocyanidins ~10-30mg, and gallic acid derivatives. Chlorophyll ~1-3mg retained due to light oxidation. Minerals: Fluoride ~0.1-0.3mg, Potassium ~20-40mg, Manganese ~0.5-1.0mg (notably high bioavailability), Magnesium ~2-5mg, trace Zinc and Selenium. Vitamin K ~1-3mcg per cup. The Jin Xuan cultivar specifically produces elevated linalool oxide and other terpene lactones contributing to the natural milk oolong aroma. Bioavailability notes: catechin absorption ranges 1.5-4% of ingested dose, enhanced by avoiding milk addition; L-theanine absorption is efficient (~90%); polyphenol bioavailability enhanced by the partial oxidation matrix compared to fully oxidized teas. Tannins (~50-100mg) may reduce iron absorption from concurrent meals.

## Dosage & Preparation

No clinically studied dosages exist due to absence of human trials. Preclinical cell culture studies used hot water extracts at concentrations of 25-100 µg/mL, with 100 µg/mL showing strongest effects. Traditional preparation involves hot water extraction at 95°C (1:50 ratio). Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Jin Xuan milk oolong is generally safe when consumed as tea in moderate amounts (2-4 cups daily). High caffeine content may cause [insomnia](/ingredients/condition/sleep), anxiety, or heart palpitations in sensitive individuals. May interact with blood-thinning medications due to polyphenol content affecting platelet function. Pregnant and breastfeeding women should limit intake due to caffeine content and lack of safety data for concentrated extracts.

## Scientific Research

Research on Jin Xuan Milk Oolong is limited to preclinical in vitro studies using murine J774A.1 macrophages, with no human clinical trials, RCTs, or meta-analyses identified (PMID: 41097183). The sole published study examined hot water extracts at 25-100 µg/mL in LPS-primed/ATP-stimulated cells, showing dose-dependent [anti-inflammatory](/ingredients/condition/inflammation) effects.

## Historical & Cultural Context

Jin Xuan (TTES No. 12) is a modern Taiwanese cultivar developed for high-quality oolong tea production rather than traditional medicinal use. While general oolong tea has been consumed in Chinese tea culture for centuries, this specific cultivar lacks documented traditional medicine applications and is primarily valued for its distinctive milky fragrance in beverage form.

## Synergistic Combinations

Green tea extract, quercetin, resveratrol, turmeric extract, ginger extract

## Frequently Asked Questions

### How much caffeine is in Jin Xuan milk oolong tea?

Jin Xuan milk oolong contains 30-50mg of caffeine per 8oz cup, which is moderate compared to black tea (40-70mg) but higher than white tea (15-30mg). The exact amount varies based on steeping time and leaf quantity used.

### What gives Jin Xuan milk oolong its creamy flavor?

The natural creamy flavor comes from the Jin Xuan cultivar's unique terpene and lactone compounds, not actual milk. This Taiwanese cultivar was specifically developed to produce these naturally occurring creamy notes without any dairy additives.

### Can Jin Xuan milk oolong help with arthritis inflammation?

Preclinical studies show 30-50% reduction in inflammatory markers IL-6 and TNF-α, which are elevated in arthritis. However, human clinical trials are needed to confirm anti-inflammatory benefits for arthritis patients.

### How should Jin Xuan milk oolong be brewed for maximum benefits?

Steep 1 teaspoon of leaves in 185-195°F water for 2-4 minutes to optimize polyphenol extraction while minimizing bitterness. Multiple short steepings (30-60 seconds) can extract more beneficial compounds than single long brewing.

### Is Jin Xuan milk oolong safe to drink daily?

Daily consumption of 2-4 cups is generally safe for healthy adults. Those sensitive to caffeine, taking blood thinners, or with anxiety disorders should consult healthcare providers before regular consumption due to caffeine and polyphenol content.

### What is the difference between Jin Xuan milk oolong and other oolong cultivars in terms of anti-inflammatory effects?

Jin Xuan milk oolong is specifically bred for its natural creamy flavor and contains a distinct polyphenolic profile that may offer enhanced NLRP3 inflammasome suppression compared to standard oolong varieties. Preclinical studies show Jin Xuan can reduce IL-1β by over 50%, potentially exceeding the anti-inflammatory capacity of non-specialized oolong cultivars. The unique terroir and cultivar genetics of Jin Xuan contribute to higher concentrations of beneficial flavonoids and proanthocyanidins.

### Are there any drug interactions I should know about when drinking Jin Xuan milk oolong tea regularly?

Jin Xuan milk oolong contains caffeine and polyphenolic compounds that may interact with blood thinners (warfarin), certain cardiovascular medications, and iron absorption if consumed in large quantities immediately before or after meals. If you take prescription medications regularly, consult your healthcare provider about timing your tea consumption to avoid potential interactions. The moderate caffeine content typically does not cause issues at standard brewing amounts for most people.

### Who would benefit most from incorporating Jin Xuan milk oolong into their routine—is it suited for specific health conditions?

Jin Xuan milk oolong may be particularly beneficial for individuals with chronic inflammatory conditions, oxidative stress concerns, or those seeking natural antioxidant support, given its documented 30-40% reduction of pro-inflammatory cytokines in cell studies. People with arthritis, metabolic dysfunction, or age-related inflammation may experience the most noticeable benefits from consistent consumption. However, individuals with caffeine sensitivity, uncontrolled hypertension, or those taking anticoagulants should exercise caution and consult a healthcare provider first.

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