There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Chapter 27.L2, Problem 1VC

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There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation? The cell membranes are more resistant than normal. An isotonic solution had been added instead of water. A solution of 0.1 M NaCl had been added instead of water. Not enough water had been added to the red blood cell pellet. The man had sickle-cell anaemia.

With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobin

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Question

Chapter 27.L2, Problem 1VC

Summary Introduction

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Question

Chapter 27.L2, Problem 1VC

Summary Introduction

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Answer 4

Question

Chapter 27.L2, Problem 1VC

Summary Introduction

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Chapter 27.L2, Problem 1VC

Summary Introduction

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

Answer 6

Chapter 27.L2, Problem 1VC

Summary Introduction

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

Answer 7

Chapter 27.L2, Problem 1VC

Summary Introduction

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Ch. 27.1 - Prob. 1ELO Ch. 27.1 - Outline the steps in treatment of municipal water...Ch. 27.1 - Prob. 3ELO Ch. 27.1 - Draw a diagram of the flow of water in a utility...Ch. 27.1 - Prob. 2CYP Ch. 27.1 - Prob. 3CYP Ch. 27.1 - Prob. 4CYP Ch. 27.1 - Prob. 5CYP Ch. 27.1 - How does treatment of drinking water and sewage...Ch. 27.2 - Prob. 4ELO

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

Solution Summary: The author explains that the principle of chemical preservation has been exploited by adding chemical preservatives to foods to prevent the growth of microorganisms.

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Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Chapter 27 Solutions

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

Solution Summary: The author explains that the principle of chemical preservation has been exploited by adding chemical preservatives to foods to prevent the growth of microorganisms.

Concept explainers

Introduction: There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.

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Chapter 27 Solutions

Introduction:

There are various methods of food preservation techniques such as use of temperature, irradiation and chemical preservation.