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Updated: Jun 2, 2026

Double-Staining Method to Detect Pectin in Plant-Fungus Interaction

Double-Staining Method to Detect Pectin in Plant-Fungus Interaction

Published on: February 4, 2022

Iron bound to pectin is utilised by rats.

Tomihiro Miyada¹, Akira Nakajima, Kiyoshi Ebihara

¹Department of Food and Nutrition, Matsuyama Shinonome Junior College, Kuwabara 3-2-1, Matsuyama 790-0853, Japan.

The British Journal of Nutrition

|April 28, 2011

Summary

Pectin enhances iron absorption in rats, with iron bound to pectin showing significant bioavailability. This study demonstrates pectin

Area of Science:

Food Science and Nutrition
Biochemistry
Animal Nutrition

Background:

Dietary iron bioavailability is crucial for preventing iron deficiency anemia.
Pectin, a soluble dietary fiber, has potential roles in mineral absorption.
Understanding pectin-iron interactions is key to optimizing iron utilization.

Purpose of the Study:

To investigate the impact of pH and ionic strength on iron release from pectin.
To assess pectin's ability to reduce ferric iron to ferrous iron.
To evaluate the in vivo bioavailability of pectin-bound iron in rats.

Main Methods:

In vitro analysis of iron release from pectin under varying pH and ionic strength conditions.
In vitro assessment of pectin's ferric iron reduction capacity.

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In vivo study using rats to determine hemoglobin (Hb) concentration and regeneration efficiency with pectin-bound iron.

Main Results:

Iron release from pectin was maximal at pH 2.0 and decreased with increasing pH.
Pectin effectively reduced ferric iron to ferrous iron.
Rats fed pectin-bound iron showed comparable Hb concentrations to those fed ferrous iron, indicating significant bioavailability.

Conclusions:

Pectin facilitates iron release and reduction, enhancing its bioavailability.
Iron bound to pectin is utilized by rats, suggesting its potential as an iron source.
Pectin may improve iron status, particularly in contexts of iron deficiency.