A. Draw the chemical repeat unit of corn starch. B. What type of material is the corn starch/water mixture? (sure, non-Newtonian, but what type of non- Newtonian fluid?)
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- a. Why is iodine tincture a good indicator to use for testing the presence of unsaturated fats? b. Based on the degree of saturation, which lipid is a better choice to spread on food, butter or margarine?What is the isoelectric point of casein? Please choose one correct answer only. A. pH 6.6 B. pH 5.6 C. pH 4.6 D. pH 3.6 E. None of the given optionsExplain the difference in the melting points of the linoleic acid and linolenic acid:
- Match the given descriptions to the type of lipids.Indicate whether each of the following is due to an increase in pH, a decrease in pH or neither and explain why: __Makes carrots soften more when cooked __Color shifts due to adding chlorine to cake flour __Lowers the amount of iron sulfide formed in hard cooked eggs __Makes anthocyanins more red __Makes an egg white foam more stable __Makes starch dextrinize when heated in boiling water __Raises osmotic pressurei) Write down the equation derived from your Excel generated standard curve and describe its components; ii) provide the values of the absorbance data of the unknown sample (do NOT show the absorbance data of the glycine standards). Show all details of the working out of your calculation. Indicate all units! Provide the answer with two decimals precision iii) state the answer in a full sentence. (note: avoid mathematical symbols [=, +, -, etc] in your answer sentence).
- Give 5 carbohydrate-containing samples and identify the specific name of carbohydrate present in each of them.how would you prepare 600 mL of a 20% strach solution beginning with a 50% stock starch solution? express your answer in litersMatch the following descriptions with the correct lipid-based compounds:
- The nutritional formula Sustacal is supplied in 10-ounce cans. How would you prepare 1600 mL of a 3/4 strength Sustacal solution? how many 10oz cans would you use to get ?mL of sustacal? how many mL diluent would you add to get 1600mL of 3/4 strength solution?NOTE: translucent (positive for fats) and opaque (negative for fats) To test for lipids, when we put one drop of corn oil on a paper towel (positive control): what opacity (translucent or opaque) did you observe in the paper towel? Does that mean the substance is present or absent? To test for lipids, when we put one drop of distilled water on a paper towel (negative control): what opacity (translucent or opaque) did you observe in the paper towel? Does that mean the substance is present or absent? What is the purpose of having controls when testing for lipids in this experiment?70 degree Celcious is the melting point of stearic acid, and 4 degree Celcius is the melting point of oleic acid. Explain using the concept of lipids why their melting point is so different.
