thayamichi: Hi, One of the students have been working on a quantitative analys…

thayamichi's picture

One of the students have been working on a quantitative analysis of beta-carotene in carrots for the science project. I wonder anyone has any precise idea how to measure beta-carotene as we have not found a doable procedure to do this.
Thank you

Oct 4 2017 - 12:40pm
Carol.Oshiro's picture

Hi Tomo!

Thanks for contacting us. The process of quantifying beta-carotene in carrots will involve a two step process: 1) Extraction of beta-carotene in carrots and 2) measuring the the absorbance of the beta-carotene using a spectrometer. This process will require the use of a non-polar solvent such as ethanol. Is this what you had in mind, if so, I can e-mail you the specifics.

Thank you! Carol

Oct 5 2017 - 2:25pm
sasakidy's picture

Hi Tomo, to add to Carol's comments... please check to make sure this is appropriate for your needs.

Oct 5 2017 - 2:48pm
thayamichi's picture

Hi Carol,

Thank you for sharing idea on beta-carotene measurement.

I will study more and test it out with ethanol, and may contact with you late again.

Thank you again for your prompt reply on my question.


Oct 23 2017 - 10:11am
thayamichi's picture

Hi Carol and Edwin,

My student project on beta-carotene in organic vs. non-organic was selected to the State science fair. Thank you so much for the support.

I would like to ask your office to extend the uses of a photospectrometer until the State science fair ends if it won't cause any inconveniences on you side.

Feb 13 2018 - 9:03am