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NIR spectrometry for monitoring of nutritional value of algae

Heegstra, Sjoerd (2019) NIR spectrometry for monitoring of nutritional value of algae. Bachelor's Thesis, Life Science and Technology.

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Abstract - Health-care practitioners have suggested microalgae as a food supplement in liquid diets because of their beneficial properties. However, the quality of such a food supplement has to be high in order to meet medical standards. Therefore, monitoring tools capable of determining nutritional values have to be found. This review investigates the feasibility of using near infrared (NIR) spectrometry as a monitor of the nutritional values of microalgae in the cultivation process. NIR is a form of vibrational spectrometry, which can be used for nondestructive and real-time measurements of compounds. Recent applications are discussed that prove the capability of NIR to ensure quality in algae food supplements. These are divided in on-line and off-line monitoring capabilities. On-line applications were preferred because of the possibility of real-time control feedback creating quality insurance. It was found that NIR technology has the potential to determine the nutritional values of algae in an off- line setting. For on-line monitoring however, the disturbance created by water, which overlays important absorbance peaks, was found to be extensive. In the end Raman and FT-ATR spectrometers are briefly discussed, which do not have this setback.

Item Type: Thesis (Bachelor's Thesis)
Supervisor nameSupervisor E mail
Degree programme: Life Science and Technology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 02 Jul 2019
Last Modified: 03 Jul 2019 12:15

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