# Chinese Broccoli (Brassica oleracea var. alboglabra)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/chinese-broccoli
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Vegetable
**Also Known As:** Brassica oleracea var. alboglabra, gai lan, Chinese kale, kai-lan, gai laan, Chinese flowering broccoli, white flowering broccoli, jie lan

## Overview

Chinese broccoli (Brassica oleracea var. alboglabra) contains glucosinolates that metabolize to bioactive isothiocyanates, which activate [phase II detox](/ingredients/condition/detox)ification enzymes and provide [antioxidant protection](/ingredients/condition/antioxidant). This cruciferous vegetable delivers 54.7 mg vitamin C per cup along with phenolic compounds including chlorogenic acid derivatives.

## Health Benefits

• [Antioxidant](/ingredients/condition/antioxidant) support from high vitamin C content (54.7 mg per cup) and phenolic compounds including chlorogenic acid and caffeic acid derivatives (evidence: compositional analysis only)
• Potential cancer-protective effects through glucosinolates that convert to isothiocyanates, though human trials specific to Chinese broccoli are absent (evidence: epidemiological data on cruciferous vegetables generally)
• [Cardiovascular](/ingredients/condition/heart-health) support via alpha-linolenic acid (ALA) omega-3 fatty acids (evidence: nutrient composition data only)
• [Bone health](/ingredients/condition/bone-health) support through high vitamin K content (evidence: nutrient analysis only)
• Cellular detoxification support through phase I/II enzyme modulation by isothiocyanates (evidence: mechanistic studies on cruciferous compounds, not Chinese broccoli specifically)

## Mechanism of Action

Glucosinolates in Chinese broccoli are hydrolyzed by myrosinase enzyme to form isothiocyanates, which activate Nrf2 transcription factor and upregulate [phase II detox](/ingredients/condition/detox)ification enzymes like glutathione S-transferase. Vitamin C (54.7 mg per cup) acts as a direct antioxidant, neutralizing [reactive oxygen species](/ingredients/condition/antioxidant) and regenerating other antioxidants. Phenolic compounds including chlorogenic acid and caffeic acid derivatives provide additional free radical scavenging activity through electron donation mechanisms.

## Clinical Summary

Current evidence for Chinese broccoli is limited to compositional analyses identifying glucosinolates, vitamin C content, and phenolic compounds. No specific human clinical trials have been conducted on Chinese broccoli alone, though broader cruciferous vegetable studies suggest potential benefits. Observational studies on cruciferous vegetable intake generally show associations with reduced cancer risk, but these findings cannot be attributed specifically to Chinese broccoli. More targeted research is needed to establish clinical efficacy and optimal intake levels.

## Nutritional Profile

Chinese Broccoli (Brassica oleracea var. alboglabra) per 100g raw edible portion: Macronutrients — Calories: ~22 kcal; Carbohydrates: ~3.8g (of which sugars ~1.2g); Dietary fiber: ~2.0g (mixed soluble/insoluble, supporting gut transit and short-chain fatty acid production); Protein: ~1.8–2.2g (containing all essential amino acids though low in methionine and cysteine relative to animal protein); Fat: ~0.3g (predominantly polyunsaturated). Micronutrients — Vitamin C: ~45–55mg (approximately 50–60% of RDI; moderate bioavailability, sensitive to heat degradation, losses of 30–50% during boiling); Vitamin K1 (phylloquinone): ~100–195µg (high bioavailability with dietary fat co-consumption); Folate (B9): ~60–75µg DFE (reasonably bioavailable; cooking reduces content ~20–30%); Vitamin A (as beta-carotene): ~155µg RAE (conversion efficiency from plant beta-carotene is variable, estimated 3–6:1 ratio depending on fat intake and individual genetics); Calcium: ~105mg (bioavailability reduced by oxalic acid content ~60mg/100g, though lower than spinach; net absorption approximately 40–50% of stated value); Iron: ~1.0–1.3mg (non-heme form; absorption enhanced by co-consumed vitamin C, inhibited by phytates); Potassium: ~230–250mg; Magnesium: ~13–18mg; Phosphorus: ~45–55mg; Zinc: ~0.35mg. Bioactive Compounds — Glucosinolates: total glucosinolates estimated 15–45µmol/g dry weight; primary compounds include gluconapin, glucobrassicin, and neoglucobrassicin; hydrolyzed by myrosinase enzyme (activated by chopping/chewing or gut microbiota) to isothiocyanates (e.g., allyl isothiocyanate, indole-3-carbinol); cooking at high temperatures inactivates myrosinase reducing conversion efficiency by up to 80%; Phenolic compounds: chlorogenic acid (~50–120mg/100g fresh weight), caffeic acid derivatives, flavonoids including quercetin and kaempferol glycosides (combined ~20–40mg/100g); Carotenoids: lutein and zeaxanthin ~1.0–1.5mg/100g (bioavailability enhanced by fat; relevant to macular health); beta-carotene ~0.9–1.1mg/100g; Chlorophyll a and b: ~15–25mg/100g (limited systemic absorption, primarily local GI effects). Bioavailability Notes — Stir-frying (brief, high heat) preserves more glucosinolate hydrolysis potential than boiling; steaming retains ~70–80% of vitamin C vs. ~50–60% with boiling; the oxalate-to-calcium ratio is more favorable than high-oxalate greens (spinach, chard), making calcium relatively more accessible; consuming with a small amount of healthy fat meaningfully improves fat-soluble vitamin (K1, A, carotenoids) absorption.

## Dosage & Preparation

No clinically studied dosage ranges exist for Chinese broccoli extracts or standardized forms. Nutritional data indicate a typical serving of 1 cup raw (91g) provides 54.7 mg glucosinolates, high levels of vitamin C and vitamin K, but no clinical dosing recommendations are available. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Chinese broccoli is generally recognized as safe when consumed as a food in typical culinary amounts. High intake of cruciferous vegetables may interfere with [thyroid function](/ingredients/condition/hormonal) in individuals with iodine deficiency due to goitrogenic compounds. Raw consumption provides higher glucosinolate content but may increase goitrogenic effects compared to cooked forms. No specific drug interactions have been documented, though individuals on blood thinners should maintain consistent vitamin K intake from green vegetables.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses specifically on Chinese broccoli (Brassica oleracea var. alboglabra) were identified in the available research. Studies focus solely on nutrient composition and phytochemical profiles, with broader cruciferous vegetable research showing general anti-cancer associations but lacking Chinese broccoli-specific human trial data or PMIDs.

## Historical & Cultural Context

Chinese broccoli has been cultivated and used in Chinese cuisine for centuries, primarily valued as a nutrient-dense vegetable rather than a formalized traditional medicine. No specific historical medicinal uses in Traditional Chinese Medicine (TCM) are documented; it is traditionally consumed as a dietary staple in Asian cuisines.

## Synergistic Combinations

Vitamin D, Omega-3 fatty acids, Turmeric, Green tea extract, Selenium

## Frequently Asked Questions

### How much vitamin C is in Chinese broccoli compared to regular broccoli?

Chinese broccoli contains 54.7 mg of vitamin C per cup, which is comparable to regular broccoli's 81 mg per cup. Both varieties provide significant amounts of this essential antioxidant vitamin.

### What glucosinolates are found in Chinese broccoli?

Chinese broccoli contains various glucosinolates that convert to bioactive isothiocyanates when the plant tissue is damaged. The specific glucosinolate profile includes compounds similar to other Brassica oleracea varieties, though exact concentrations vary.

### Should Chinese broccoli be eaten raw or cooked for maximum benefits?

Raw Chinese broccoli provides higher glucosinolate content and myrosinase enzyme activity for isothiocyanate formation. Light steaming preserves most compounds while reducing goitrogenic effects and improving digestibility.

### Can Chinese broccoli affect thyroid function?

Chinese broccoli contains goitrogenic compounds that may interfere with thyroid hormone synthesis in individuals with iodine deficiency. People with thyroid conditions should consume moderate amounts and ensure adequate iodine intake.

### How does Chinese broccoli compare to other cruciferous vegetables nutritionally?

Chinese broccoli provides similar glucosinolate and antioxidant profiles to other Brassica oleracea varieties like kale and cabbage. It offers moderate vitamin C content and unique phenolic compounds including chlorogenic acid derivatives not found in all cruciferous vegetables.

### What is the difference between fresh Chinese broccoli and frozen Chinese broccoli in terms of nutrient retention?

Fresh Chinese broccoli retains its full nutrient profile when consumed immediately, while frozen varieties are typically blanched before freezing, which can cause a 15-30% loss of heat-sensitive vitamin C but may preserve glucosinolates and phenolic compounds more effectively during storage. Frozen Chinese broccoli remains a nutrient-dense option and may be preferable to fresh if the fresh product has been stored for extended periods, as nutrient degradation accelerates with time. Both forms provide substantial antioxidant support, though fresh offers slightly higher vitamin C content per serving.

### Is Chinese broccoli safe to consume daily, and are there any concerns with excessive intake?

Daily consumption of Chinese broccoli is safe for most adults and is actually recommended as part of a nutrient-dense diet, as it provides significant vitamin C, minerals, and bioactive compounds without toxicity risk at typical food consumption levels. The only consideration is for individuals taking anticoagulants (due to vitamin K content) or those with specific thyroid conditions who should maintain consistent intake rather than dramatically increasing consumption. Excessive consumption beyond typical dietary amounts (several cups daily) is unlikely to cause harm but is unnecessary for obtaining health benefits.

### Does Chinese broccoli provide better antioxidant support than taking a vitamin C supplement?

Chinese broccoli offers superior antioxidant support compared to isolated vitamin C supplements because it delivers vitamin C alongside synergistic phytocompounds including chlorogenic acid, caffeic acid derivatives, and glucosinolates that work together to support cellular health. While a cup of Chinese broccoli provides approximately 55 mg of vitamin C (comparable to some supplements), the accompanying polyphenols and cruciferous compounds provide additional antioxidant mechanisms not present in vitamin C-only formulations. Food-based sources like Chinese broccoli also provide fiber, minerals, and other micronutrients that support overall nutrient bioavailability and absorption.

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