# Jostaberry (Ribes × nidigrolaria)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/jostaberry
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Fruit
**Also Known As:** Ribes × nidigrolaria, josta berry, josta, Ribes nidigrolaria, gooseberry-currant hybrid, black currant-gooseberry cross

## Overview

Jostaberry (Ribes × nidigrolaria) is a hybrid berry containing over 50 flavonols and 14.00 mg/g anthocyanins that may support cellular antioxidant defenses. These polyphenolic compounds work by scavenging [reactive oxygen species](/ingredients/condition/antioxidant) and modulating [inflammatory pathway](/ingredients/condition/inflammation)s.

## Health Benefits

• High [antioxidant activity](/ingredients/condition/antioxidant) from polyphenols and flavonoids (over 50 flavonols identified) - based on in vitro studies only
• Rich source of vitamin C (3.60 mg/g DW in frozen fruit) - analytical data only, no clinical evidence
• Contains anthocyanins (14.00 mg/g DW) with potential [anti-inflammatory](/ingredients/condition/inflammation) properties - in vitro evidence only
• Provides organic acids including malic, citric, and fumaric acids - compositional analysis only
• Source of bioactive compounds like chlorogenic acid (2.00 mg/g DW) and rutoside (1.36 mg/g DW) - no human studies available

## Mechanism of Action

Jostaberry's anthocyanins and flavonols neutralize [reactive oxygen species](/ingredients/condition/antioxidant) through electron donation and metal chelation. The polyphenolic compounds modulate NF-κB and MAPK [inflammatory](/ingredients/condition/inflammation) signaling pathways while enhancing endogenous antioxidant enzyme activity including superoxide dismutase and catalase.

## Clinical Summary

Current evidence for jostaberry is limited to in vitro laboratory studies demonstrating antioxidant capacity and cellular protection against [oxidative stress](/ingredients/condition/antioxidant). No human clinical trials have been conducted to establish therapeutic efficacy, safety profiles, or optimal dosing protocols. The 3.60 mg/g vitamin C content has been analytically confirmed in frozen fruit samples, but bioavailability and clinical relevance remain unestablished.

## Nutritional Profile

Jostaberry (Ribes × nidigrolaria) is a hybrid cross between blackcurrant and gooseberry with a nutrient-dense profile reflecting both parent species. Carbohydrates are the primary macronutrient (~8–10 g/100g fresh weight), with dietary fiber estimated at 3–4 g/100g FW based on parent species data. Protein content is low (~0.9–1.2 g/100g FW) and fat content is negligible (<0.5 g/100g FW). Vitamin C is well-documented at 3.60 mg/g DW in frozen fruit (equivalent to ~36 mg/100g DW basis; fresh weight values likely higher pre-processing, estimated 50–80 mg/100g FW), positioning it as a notable dietary vitamin C source, though bioavailability may be reduced in processed or frozen forms due to oxidative degradation. Anthocyanins are present at 14.00 mg/g DW, primarily cyanidin and delphinidin glycosides inherited from the blackcurrant parent, with bioavailability typically ranging 1–10% for anthocyanins in humans due to rapid [metabolism](/ingredients/condition/weight-management) and excretion. Over 50 flavonols have been identified including quercetin, myricetin, and kaempferol glycosides; total polyphenol content is high, consistent with blackcurrant lineage. Organic acids include malic acid, citric acid, and fumaric acid, contributing to tartness and potentially influencing mineral absorption. Potassium, calcium, and magnesium are present based on parent species profiles (potassium estimated ~200–250 mg/100g FW), with iron and zinc in minor quantities. Carotenoids and chlorophyll derivatives may contribute to the fruit's dark color alongside anthocyanins. Bioavailability data specific to jostaberry is not yet established in clinical literature; values are extrapolated from blackcurrant and gooseberry research and in vitro analytical studies.

## Dosage & Preparation

No clinically studied dosage ranges exist due to absence of human trials. Processing forms examined include freeze-dried powder and microparticle-encapsulated extracts using carriers like maltodextrin or sodium alginate at 1:1 v/v juice-to-carrier ratios, but these have only been studied for stability, not therapeutic dosing. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Safety data for jostaberry supplements is not available due to lack of clinical studies. As a member of the Ribes genus, it may share similar safety profiles with related berries like blackcurrants. Potential interactions with anticoagulant medications are theoretically possible due to vitamin C content. Pregnant and breastfeeding women should avoid supplemental forms due to insufficient safety data.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses on jostaberry have been conducted. Current research is limited to in vitro [antioxidant](/ingredients/condition/antioxidant) assessments, volatile profiling, and phytochemical analyses, with no PMIDs for human studies available in the literature.

## Historical & Cultural Context

No historical or traditional medicinal uses are documented for jostaberry. As a modern hybrid developed specifically for fruit production, it lacks any evidence of use in traditional medicine systems or cultural healing practices.

## Synergistic Combinations

Black currant, European gooseberry, vitamin C, quercetin, anthocyanin complex

## Frequently Asked Questions

### How much vitamin C is in jostaberry?

Jostaberry contains 3.60 mg vitamin C per gram dry weight in frozen fruit. This represents a moderate vitamin C content compared to other berries, though bioavailability from supplements hasn't been studied.

### What antioxidants are found in jostaberry?

Jostaberry contains over 50 identified flavonols and 14.00 mg/g dry weight of anthocyanins. These polyphenolic compounds demonstrate strong antioxidant activity in laboratory studies, though human benefits aren't proven.

### Is jostaberry safe to take daily?

Daily safety of jostaberry supplements hasn't been established in clinical trials. While the fruit appears safe as food, concentrated supplement forms lack safety data for long-term use.

### Can jostaberry help with inflammation?

Laboratory studies suggest jostaberry anthocyanins may modulate inflammatory pathways including NF-κB signaling. However, no human studies have tested anti-inflammatory effects or established effective doses.

### What is the difference between jostaberry and blackcurrant?

Jostaberry is a hybrid cross between blackcurrant and gooseberry, containing similar anthocyanins but different flavonol profiles. Jostaberry has over 50 identified flavonols compared to blackcurrant's more limited polyphenolic diversity.

### Can I get the same nutritional benefits from eating fresh jostaberries instead of supplements?

Fresh jostaberries contain similar nutrient profiles to frozen fruit, including vitamin C and anthocyanins, though nutrient density can vary based on ripeness and storage conditions. However, jostaberries are relatively uncommon in most markets, making regular dietary consumption difficult for most people. Supplemental forms allow for consistent dosing, though they typically lack the whole-food benefits of the fresh berry's fiber and additional phytochemicals.

### Is jostaberry safe for children and pregnant women?

Limited safety data exists specifically for jostaberry in children and pregnant women, as most available research is limited to in vitro and analytical studies. While jostaberries are food-derived and generally recognized as safe in culinary use, supplemental forms have not been formally evaluated for these populations. Pregnant women and parents should consult healthcare providers before introducing jostaberry supplements to their routines.

### How does the anthocyanin content in jostaberry compare to other berries?

Jostaberry contains approximately 14.00 mg/g DW of anthocyanins, positioning it competitively among berry fruits for polyphenol content. However, direct comparative clinical data between jostaberry and other common berries like blueberries or blackcurrants is limited, making it difficult to definitively rank their health benefits. Most evidence for jostaberry's anthocyanins comes from in vitro studies rather than human clinical trials.

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