• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigate how PH affects the ability of raw meat to absorb water - Plan

Extracts from this document...


Tenderising Meat I am planning an experiment to investigate how PH affects the ability of raw meat to absorb water. * Independent Variable The independent variable for this experiment is the PH of the solution the steak is marinated in. I will achieve a range of different PH values by using buffers set at PH 1, 3, 5, 7, 9. I predict that there will be an optimum PH where the steak will absorb the most water. The amount of water absorbed by the raw meat will increase as you increase the PH up to the optimum and then decrease the PH as the PH increases past the optimum. * Dependent Variable The dependent variable for this experiment is the amount of water absorbed by the diced steak by process of osmosis. ...read more.


This could alter the end percentage change in mass. The mass of the diced steak before marination needs to be controlled. A larger mass could potentially absorb and store more water. I will try to get as similar masses as possible to avoid any differences in weight. Instead of calculating the difference in mass, I will calculate percentage change in mass to account for any small differences in mass. Also a constant surface area of the diced steak is important, otherwise there would be a larger area for the solution to act on causing more tenderisation therefore altering the overall results. The temperature at which the meat is marinated at would need to remain constant. At a higher temperature, molecules are moving faster therefore osmosis is more likely to occur. ...read more.


Drying of the steak pieces, dab twice on each side. If some are dabbed more than the other it would alter the end percentage change in mass. * Method ? Divide the diced steak into five equally sized piles. ? Using electronic scales weigh each pile to make the masses as similar as possible. Record the masses. ? Add 50ml of buffer solution PH1 to a beaker and repeat the process for the other buffer solutions. ? Put one set of diced steak into each beaker. ? Leave the 5 beakers for 12hours allowing the raw meat to marinate. ? Remove the dices from the solution and pat dry before weighing. ? Record the mass of each pile and calculate the percentage change in mass by using formula : Change x 100 Original ? Repeat the experiment 3 times to ensure an accurate set of results. ? Plot a graph of PH against percentage change in mass. Stephanie Mckeown ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Classifying Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. Determining the water of crystalisation

    15.99 hydrogen (H) 01.00 copper (Cu) 63.55 sulphur (S) 32.07 * Molar mass of dehydrated CuSO4: Mr = 63.55+32.07+4*15.99 = 159.58 [g * mol-1] * Molar mass of water (H2O): Mr = 2*1.00 + 15.99 = 17.99 [g * mol-1] 5.

  2. The role of mass customization and postponement in global logistics

    The lack of inventory has advantages (low carrying costs) and disadvantages (customers have to wait). It also involves a delivery capability that reaches directly to the customer. The technological differences between mass production and mass customization, while considerable, are matters of degree: Mass customization entails richer information flows and more-stringent requirements for process flexibility.

  1. Investigation into how mass affects the rate of fall.

    1000 kg then to find out the weight, the formula would be: W = M X G W =100000 X 10 W= 1000000N If the mass of the rocket decreased to 100000 and the gravitational force strength remained the same, the weight would be W = M X G W

  2. An experiment to investigate the factors that determine the amount of energy released when ...

    In my preliminary work, I am going to investigate different alcohols and choose which will be the best to use in the experiment. It is important that I choose a suitable and open range of different alcohols with different numbers of carbon atoms.

  1. Our experiment consisted of two samples of water containing unknown substances, and our objective ...

    The first test we decided to do was the flame test. This test is for the detection of cations. The flame test works by holding the substance in a flame and noting down the colour of the flame produced. This works when the energy from the flame causes electrons to

  2. To investigate Dalton’s law of constant composition

    than can fit in a test tube, so a large crucible must be used. Also I researched using available books and information that the gas given off copper nitrate, nitrogen dioxide, is toxic, so this must be heated in a fume cupboard.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work