# Mache (Valerianella locusta)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/mache
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-05
**Evidence Score:** 2 / 10
**Category:** Vegetable
**Also Known As:** Valerianella locusta, lamb's lettuce, corn salad, field salad, rapunzel, doucette, feldsalat, canonigos, spring medicine, nut lettuce, white pot herb

## Overview

Mache (Valerianella locusta) is a nutrient-dense leafy green rich in phenolic compounds and flavonoids that exert antioxidant effects by scavenging [free radical](/ingredients/condition/antioxidant)s across multiple assay systems. Its bioactive polyphenols also inhibit α-glucosidase, an intestinal enzyme responsible for carbohydrate breakdown, suggesting a potential role in post-meal blood sugar modulation.

## Health Benefits

• Enhanced [antioxidant protection](/ingredients/condition/antioxidant) through phenolic compounds and flavonoids (12-45% improvement in DPPH, ABTS, CUPRAC, and FRAP assays - preliminary evidence only)
• Potential blood sugar regulation via α-glucosidase inhibition (up to 300% increase in inhibitory activity - in vitro evidence only)
• Eye health support from selective retinal absorption of zeaxanthin providing UV-filtering protection (nutritional content data)
• [Cardiovascular](/ingredients/condition/heart-health) support through high potassium (330mg/100g) and low sodium content (traditional dietary use)
• [Immune system](/ingredients/condition/immune-support) support historically valued for high vitamin C content to prevent scurvy (traditional use, no clinical trials)

## Mechanism of Action

Mache's phenolic acids and flavonoids donate hydrogen atoms or electrons to neutralize [reactive oxygen species](/ingredients/condition/antioxidant), demonstrating measurable activity in DPPH, ABTS, CUPRAC, and FRAP radical-scavenging assays, with improvements of 12–45% over controls in preliminary studies. Its polyphenol fraction competitively inhibits α-glucosidase, the brush-border enzyme that cleaves dietary disaccharides into absorbable monosaccharides, reducing the rate of glucose entry into portal circulation—an effect analogous to the mechanism of acarbose but documented only in vitro at this stage. The flavonoid glycosides present in Valerianella locusta may additionally modulate NF-κB signaling pathways, contributing to a broader [anti-inflammatory](/ingredients/condition/inflammation) profile that supports but does not confirm systemic antioxidant benefits in humans.

## Clinical Summary

Available evidence for mache consists primarily of in vitro laboratory studies evaluating extracts against standardized radical-scavenging and enzyme-inhibition assays; no published randomized controlled trials in humans have specifically examined mache supplementation as an isolated intervention. The [antioxidant](/ingredients/condition/antioxidant) data (12–45% improvement across DPPH, ABTS, CUPRAC, and FRAP assays) and the α-glucosidase inhibition data (up to 300% increase in inhibitory activity) are both derived from cell-free or cell-based models, which limits direct extrapolation to clinical outcomes. Mache does contribute meaningful amounts of vitamin C, beta-carotene, and folate in dietary contexts, nutrients with established human-health evidence, but these benefits are attributable to its nutritional composition rather than to any proprietary extract. Overall, mache's functional health claims remain at a preliminary, hypothesis-generating stage requiring well-designed human trials to confirm efficacy and determine therapeutic dosing.

## Nutritional Profile

Mache (Valerianella locusta) is a nutrient-dense leafy green with low caloric density (~21 kcal/100g fresh weight). Macronutrients: protein 2.0g/100g (notably high for a leafy green), carbohydrates 3.6g/100g, dietary fiber 1.8g/100g, fat 0.4g/100g, water content ~92-93%. Micronutrients: Vitamin C 38mg/100g (~42% DV), Vitamin A (as beta-carotene) ~600-700µg RAE/100g, Vitamin B6 0.27mg/100g, Folate (B9) ~14µg/100g, Vitamin K1 approximately 50-60µg/100g. Minerals: Iron 2.2mg/100g (notably high, though non-heme form with estimated 5-12% bioavailability influenced by co-consumed vitamin C), Potassium 459mg/100g, Calcium 38mg/100g, Magnesium 13mg/100g, Phosphorus 49mg/100g, Manganese 0.42mg/100g. Carotenoids: Zeaxanthin and lutein combined ~2.5-5.0mg/100g fresh weight — zeaxanthin is selectively absorbed by retinal macular tissue; bioavailability enhanced by co-consumption with dietary fat (lipophilic absorption). Beta-carotene ~3.6mg/100g with estimated 3-6% conversion efficiency to retinol. Bioactive phenolic compounds: Flavonoids including quercetin glycosides and chlorogenic acid derivatives present at measurable but variable concentrations (10-50mg GAE/100g fresh weight depending on cultivar, season, and light exposure); these underpin reported [antioxidant activity](/ingredients/condition/antioxidant) in DPPH/ABTS/CUPRAC/FRAP assays. Omega-3 fatty acids (ALA): approximately 0.15-0.25g/100g, contributing a favorable omega-3 to omega-6 ratio for a leafy vegetable. Nitrate content: moderate at ~100-250mg/100g fresh weight, lower than spinach or arugula. Bioavailability notes: Iron absorption enhanced by co-consumption with vitamin C-rich foods; fat-soluble carotenoid absorption improved significantly with lipid-containing meals; oxalate content is low compared to spinach, minimizing mineral-binding interference.

## Dosage & Preparation

No clinically studied therapeutic dosages exist due to absence of human trials. As a food, fresh leaves are typically consumed in 100g servings providing nutritional benefits including 41% daily vitamin K. No standardized extracts or therapeutic formulations have been studied. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Mache consumed as a food vegetable is generally recognized as safe, with no documented serious adverse effects in healthy adults at typical dietary portions of 50–100 g fresh weight. Because its polyphenols inhibit α-glucosidase in vitro, concentrated extracts taken alongside antidiabetic medications such as acarbose, metformin, or insulin could theoretically produce additive hypoglycemic effects, warranting caution and [blood glucose](/ingredients/condition/weight-management) monitoring. Mache contains moderate oxalate levels, which may be relevant for individuals with a history of calcium-oxalate kidney stones who are advised to limit high-oxalate foods. Pregnant and breastfeeding women can safely consume mache as a food, but concentrated supplement forms have not been evaluated for safety in these populations, so supplemental use should be discussed with a healthcare provider.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses have been conducted on Valerianella locusta as a therapeutic agent. Research is limited to in vitro enzyme inhibition and [antioxidant](/ingredients/condition/antioxidant) assays showing enhanced α-glucosidase inhibition and modest effects on cholinesterase, α-amylase, and tyrosinase. All available evidence is preclinical without PubMed-indexed human studies.

## Historical & Cultural Context

In European folk medicine, mâche was used as a spring tonic, mild diuretic, digestive aid, and for its calming effects to promote sleep, spanning centuries in Western herbal traditions. Country folk in historical Britain requested it as a 'spring medicine,' with homeopathic tinctures made from fresh roots. The plant was particularly valued for its high vitamin C content to prevent scurvy and boost [immunity](/ingredients/condition/immune-support).

## Synergistic Combinations

Spinach, Kale, Arugula, Vitamin C, Alpha-lipoic acid

## Frequently Asked Questions

### What is mache and how is it different from other leafy greens?

Mache (Valerianella locusta), also called corn salad or lamb's lettuce, is a cool-season leafy green with a notably higher vitamin C content (approximately 38 mg per 100 g) and beta-carotene density than iceberg lettuce, and a flavonoid-rich phenolic profile that distinguishes it from spinach or arugula. Its small, tender leaves contain concentrated chlorogenic acids and flavonoid glycosides that contribute to measurable antioxidant activity in laboratory models, making it nutritionally comparable to powerhouse greens like watercress on a per-gram basis.

### Can mache help lower blood sugar levels?

In vitro studies show that mache polyphenol extracts inhibit α-glucosidase activity by up to 300% compared to controls, suggesting the potential to slow post-meal glucose absorption by blocking carbohydrate-digesting enzymes in the small intestine. However, this evidence comes exclusively from cell-free assays, and no human clinical trials have confirmed that eating mache or taking mache extracts meaningfully reduces blood glucose or HbA1c in people with or without diabetes.

### What antioxidant compounds are found in mache?

Mache contains a range of phenolic antioxidants including chlorogenic acid, caffeic acid derivatives, and flavonoid glycosides such as quercetin and luteolin conjugates, alongside fat-soluble antioxidants like beta-carotene and vitamin E. These compounds collectively scavenge free radicals across multiple mechanisms, explaining the 12–45% improvement in DPPH (hydrogen-atom transfer), ABTS (electron transfer), CUPRAC, and FRAP assays observed in preliminary extract studies.

### Is mache safe to eat every day?

Daily consumption of mache as a salad green (50–100 g portions) is considered safe for most healthy adults, providing beneficial folate, vitamin C, and iron without known toxicity concerns. Individuals prone to calcium-oxalate kidney stones should be aware that mache contains moderate oxalates and may want to limit very large daily quantities, while those on blood-thinning medications should note its vitamin K content, which is relevant to anticoagulant management.

### Are there mache supplements available, and what dose is studied?

Standardized mache supplements in capsule or extract form are not widely commercially available as of current knowledge, and no established therapeutic dosage has been validated through human clinical trials. The antioxidant and enzyme-inhibition data were generated using crude or semi-purified extracts in laboratory settings at concentrations that do not directly translate to practical oral dosing recommendations, meaning any supplement dose on the market would be speculative rather than evidence-based.

### What is the bioavailability of zeaxanthin from mache compared to other dietary sources?

Mache contains zeaxanthin that selectively accumulates in the retina for UV-filtering protection, though human bioavailability studies are limited. The zeaxanthin in leafy greens like mache is typically absorbed better when consumed with dietary fat, which enhances its transport across the intestinal barrier. Compared to supplemental zeaxanthin, food-based sources from mache may offer additional phytonutrients that work synergistically, though direct comparative absorption data in humans is lacking.

### Is mache safe to consume for people taking blood sugar medication like metformin?

Mache is generally recognized as safe to eat daily alongside blood sugar medications, as it is a whole food with minimal drug interaction risk. However, because in vitro evidence suggests mache compounds may inhibit α-glucosidase enzymes (similar to some diabetes medications), individuals on glucose-lowering drugs should maintain consistent intake rather than dramatically increasing consumption. Consult with a healthcare provider before making substantial dietary changes if taking antidiabetic medications to avoid cumulative blood sugar-lowering effects.

### How does the antioxidant potency of fresh mache compare to cooked mache in in vitro assays?

Preliminary in vitro studies show mache phenolic compounds and flavonoids demonstrate 12–45% improvements in antioxidant assays (DPPH, ABTS, CUPRAC, FRAP), though cooking methods can reduce these bioactive compounds through heat degradation. Raw mache generally retains higher levels of heat-sensitive polyphenols compared to cooked preparations, making fresh consumption potentially more beneficial for antioxidant intake. However, cooking may enhance the bioavailability of fat-soluble antioxidants like zeaxanthin, suggesting both preparation methods offer distinct nutritional advantages.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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