Q&A for How to Test for Starch

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  • Question
    Does cold pasta have resistant starch?
    Claudia Carberry, RD, MS
    Registered Dietitian
    Claudia Carberry is a Registered Dietitian based in Little Rock, Arkansas. Claudia specializes in kidney transplants and counseling patients for weight loss. She works at the University of Arkansas for Medical Sciences center, and has been working there since 2015. Before her current role, she worked as a Clinical Nutrition Manager at Jefferson Regional Medical Center. She is a member of the Arkansas Academy of Nutrition and Dietetics. Claudia received her MS in Nutrition from the University of Tennessee, Knoxville, where she completed her 1200 hour dietetic internship. She received a BS in Nutrition Sciences from Southeast Missouri State University.
    Registered Dietitian
    Expert Answer
    No, pasta is not a good source of resistant starch. Try eating corn and potatoes instead.
  • Question
    What is the control for starch testing?
    Athena21
    Community Answer
    The control would be doing this procedure without the biotic element. For example, the control for testing for starch in a potato would be just putting iodine solution on a tile without the potato.
  • Question
    How do you differentiate blue, black and brown for this type of test?
    Ethansciencelab
    Community Answer
    Blue or black that means there is starch found, but brown means there is no starch.
  • Question
    Why was the leaf tested for starch and not glucose?
    Hann B
    Community Answer
    Plants store glucose as starch. If starch is detected, then it shows that photosynthesis has occurred, as the plant is storing the glucose made in photosynthesis.
  • Question
    What is the name given to this test?
    ths 130028
    Community Answer
    It is called the iodine test due to the use of iodine in identifying the starch.
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