Credit: FRANK FOX/SCIENCE PHOTO LIBRARY

Caption: Light microscope footage of the freshwater algae Haematococcus pluvialis. This is a single-celled green alga, which photosynthesises using chlorophyll in good conditions. When stressed it produces the orange pigment astaxanthin, as seen at right. Astaxanthin is an antioxidant and is thought to act as a sunscreen for the cells. The chemical is extracted and widely used in animal feeds, human dietary supplements and some cosmetics. H. pluvialis cells average around 20 micrometres in diameter, and are the richest natural source of astaxanthin. Despite this, the chemical can still be produced more cheaply from petroleum products.

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Keywords: alga, algae, animal, antioxidant, astaxanthin, biochemical, biochemistry, biological, biology, botanical, botany, cell, cells, chemical, chemistry, chlorophyta, clip, cosmetic, cosmetics, fauna, feed, film, flora, food, footage, gray, green alga, grey background, haematococcus pluvialis, healthy, industrial, industry, many, microscope, microscopic, microscopy, motion, multiple, nature, normal, orange, phase, plant, pond life, protection, protective, red, single-celled, stress, stressed, unicellular, video, wildlife

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Green and red Haematococcus algae

K006/9429 Rights Managed

Downloadable master

Duration: 00:00:14.02

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 342.2M

Original

Capture format: Canon EOS 5D Mark II

Codec: Apple ProRes 422

Please contact Science Photo Library if you require the original, or other formats.

 

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