Story: Seaweed

A carrageenan-producing seaweed

A carrageenan-producing seaweed

Carrageenan is an important chemical that is extracted from types of red seaweed. It is used extensively in the food industry as a gelling agent. High-quality carrageenans are produced by this native species, Gigartina atropurpurea. It forms wide leafy blades up to 50 centimetres long and is common on intertidal rocks all around the North Island, northern South Island and Chatham Islands.

Using this item

NIWA – National Institute of Water and Atmospheric Research

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

All images & media in this story

How to cite this page:

Maggy Wassilieff, 'Seaweed - Modern uses and future prospects', Te Ara - the Encyclopedia of New Zealand, (accessed 9 February 2023)

Story by Maggy Wassilieff, published 12 Jun 2006