Johnson O Esua

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Questions related from Johnson O Esua

How does drying temperature affect colour, lycopene and carotenoid content of fruits?

Can an increase in drying temperature (> 70 degrees) result in a decrease in colour parameters (LAB) of fruits, while total carotenoid and lycopene content increases? if yes, what is the...

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How do I express antioxidant activity in Ascorbic acid equivalent antioxidant capacity (AEAC)?

Good day. I am using the DPPH free radical scavenging assay to determine antioxidant activity in tomatoes. I have carried out the extraction, read the absorbance and calculated the scavenging...

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How do I express Total Phenols as Gallic Acid Equivalent/100g?

Good day all. Please I need to understand how to express total phenols in Gallic Acid Equivalent/100g. I have carried out my extraction, added FC reagent and read the absorbance at 735nm. I have...

30 July 2015 5,469 5 View

What is the number of dilution appropriate for best results during microbial enumeration?

I am trying to identify the spoilage organisms associated with tomatoes and malay apple wax. Generally, what is the appropriate number of serial dilution one has to perform to achieve best results...

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