Glucotropaeolin (Aromatic Glucosinolate · BITC Precursor · Halim Seeds · Galactagogue)

Compound	Glucotropaeolin
Chemical class	Glucosinolate — Aromatic (Benzyl glucosinolate)
CAS	1119-34-2
Primary source	Lepidium sativum (garden cress / Halim), Tropaeolum majus (nasturtium), Moringa oleifera (minor)
Key applications	BITC precursor, antimicrobial, hepatoprotective, antifungal, lactation support (Halim)
Claim strength	Moderate
Typical form	Halim seeds (garden cress) extract; glucotropaeolin isolate
Buy from Herbuno	Halim Seeds Extract Powder - Garden Cress - Lepidium Sativum Linn → Halim Seeds Oil Soluble Extract - Garden Cress - Lepidium Sativum Linn →

Name origin: From Tropaeolum (garden nasturtium genus), one of the primary original characterisation sources for benzyl glucosinolate. Glucotropaeolin is the benzyl glucosinolate — with a simple benzyl (phenylmethyl) side chain. Hydrolysis by myrosinase generates benzyl isothiocyanate (BITC). Traditional use: Garden cress (Lepidium sativum, Halim/Haleem in Hindi/Urdu, Chandrasur in Sanskrit) is one of the most important medicinal seeds in Unani and Ayurvedic medicine — used extensively for lactation enhancement (galactagogue), respiratory complaints, bone healing (diuretic and mineral-rich properties), and reproductive health. Halim seeds are a traditional post-partum nutrition food in South Asian culture, given to nursing mothers in halwa and porridge preparations for milk production support. The glucotropaeolin content contributes to halim’s documented antimicrobial and hepatoprotective properties. Research trajectory: Glucotropaeolin and BITC have documented antimicrobial, antifungal, hepatoprotective, and antiproliferative properties in preclinical research. BITC has human bioavailability data and is studied as a chemopreventive isothiocyanate. Halim seeds have specific human data for lactation support and iron deficiency anaemia management. Commercial source: Halim Seeds Extract Powder (Garden Cress) from Herbuno. See sourcing options below.

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Evidence for Glucotropaeolin Applications

Lactation support (galactagogue) — Halim seeds: Multiple small Indian clinical trials with Halim seed preparations demonstrate significant improvements in milk production (measured by infant weight gain and feed frequency) in nursing mothers. The galactagogue mechanism is not attributed to glucotropaeolin specifically but to the complete Halim seed nutritional profile (high iron, calcium, protein, omega-3 fatty acids alongside glucosinolates). Claim strength: Moderate (human trials; small sample sizes).

BITC generation — antimicrobial and antifungal: Glucotropaeolin + myrosinase → BITC (benzyl isothiocyanate). BITC demonstrates potent antimicrobial activity against S. aureus, E. coli, H. pylori, and antifungal activity against Candida albicans and dermatophytes. MIC values are in the low micromolar range. BITC has GRAS status as a food flavouring in the US. Claim strength: Moderate.

Hepatoprotective: Halim seed extract and BITC demonstrate hepatoprotective activity in CCl4-induced liver injury animal models. Nrf2 activation and Phase-II enzyme induction contribute. Consistent with traditional Unani use of Halim for liver conditions. Claim strength: Moderate.

Antiproliferative: BITC induces apoptosis and cell cycle arrest in multiple cancer cell lines. In human cancer cell comparisons, BITC shows greater selectivity for cancer cells vs normal cells than some other isothiocyanates. Claim strength: Moderate (preclinical).

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Dosage & Formulator Specification

Traditional Halim seed doses for lactation: 1–2 tablespoons (10–20 g) Halim seeds/day in food preparations. For glucotropaeolin-standardised extract, typical glucosinolate content in garden cress seed: 30–80 mg glucotropaeolin per gram of seed. For antimicrobial and hepatoprotective applications, Halim Seeds Extract at 200–500 mg/day is a working range. BITC content depends on myrosinase activity status of the extract — specify. Garden cress seed is a GRAS food ingredient in many markets; garden cress extract is appropriate for supplement formulation without exotic regulatory concerns.

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Frequently Asked Questions — Glucotropaeolin

What makes Halim seeds (garden cress) a traditional galactagogue?
Halim seeds (Lepidium sativum) are rich in iron (17 mg/100g — higher than spinach), calcium, folate, and omega-3 fatty acids alongside glucotropaeolin and other glucosinolates. In traditional South Asian post-partum nutrition, iron deficiency is a major contributor to reduced milk production. The combination of iron repletion, hormonal support (glucosinolate effects on oestrogen metabolism), and direct galactagogue effects (possibly via prolactin pathway modulation) underlies the empirically observed lactation-enhancing effect. The complete seed provides the nutritional matrix that laboratory studies of isolated glucotropaeolin cannot reproduce.

Is glucotropaeolin the same compound in garden cress and nasturtium?
Yes — glucotropaeolin (benzyl glucosinolate) is the same molecule in both Lepidium sativum (garden cress/Halim) and Tropaeolum majus (garden nasturtium). Garden nasturtium flowers and leaves are peppery due to BITC from glucotropaeolin. Both are edible and both generate the same hydrolysis products. For supplement applications, garden cress (Halim) is the more established commercial source with stronger traditional medicine documentation and specific lactation research.

How does BITC (from glucotropaeolin) compare to AITC (from sinigrin)?
Both BITC and AITC are isothiocyanates with antimicrobial and chemopreventive properties, but BITC has greater selectivity for cancer cells in comparative studies (higher therapeutic index) and stronger STAT3 inhibitory activity. AITC (allyl isothiocyanate) has greater TRPA1 activity (more pungent/irritating) and stronger broad-spectrum antimicrobial potency. BITC is the more appropriate isothiocyanate for antiproliferative supplement positioning; AITC for antimicrobial and flavour applications.

Can garden cress extract be combined with moringa for a women’s health formulation?
Yes — this is a rationally synergistic combination grounded in traditional South Asian post-partum nutrition. Garden cress (Halim — iron, glucotropaeolin, omega-3) addresses lactation support, iron deficiency, and Nrf2 activation. Moringa (Sahjan — glucomoringin, vitamin C, calcium, protein) provides complementary nutritional density and its own anti-inflammatory and nutritive properties. The combination is traditionally consumed together in post-partum food preparations and provides multi-dimensional nutritional and phytochemical support for maternal health.

Related compounds: Gluconasturtiin, Glucomoringin, Sinigrin, Allyl Isothiocyanate

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Claim-strength scale – High = multiple human RCTs; Moderate = limited trials or strong preclinical convergence; Emerging = early-stage lab or animal data.

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