• Soaking

Soak means make or allow to become wet by immersing it in liquid. It is based on principle of osmosis process which is diffusion of water molecules from a region of higher water concentration to lower water concentration through a partially permeable membrane.

  • Why soaking time is essential?

 when soaked maize seeds for 24 hours there is odour in water and also in the maize seeds to remove this odour and to know exact time of soaking.

Objective : To find out soaking time of maize seeds.

  • Trial 1
  • Materials:
Sr No.  Materials Quantity
1. Beaker 1
2. Measuring cylinder 1
3. Maize seeds 100 gm
4. Weighing Balance 1
  • Procedure:
  • 1. I have taken 100 gm of maize seed into beaker.
  • 2. Added 100 ml of water into beaker.
  • 3.Then I take weight of maize seed at one-hour of interval with the help of weighing balance.
  • Take weight of maize
  • soaked into beaker
  • weighing of soaked maize

  • Observations:

Weight of maize = 100 gm

Water added = 100 ml

Table : Following table shown the time and weight of maize

Time  Weight of maize (gm)
10 100
11 115
12 117
1 120
2 122
4 124
5 127
6 130
7 132
8 134
9 134
10 136
11 136
12 138
1 140
2 140

Conclusion :

From the experiment concluded that the soaking time of maize seeds is 12 to 14 hours but in this there was experimental errors so next step is to get other trial on soaking time.

TRIAL 2

  •  Procedure:
  1. I had taken 100 gm of seed.
  2. Added water into the vessel until the seed fully immersed into it.
  3. After half hour of interval sieve was withdrawal from the vessel and weight it.
  4. I record the reading until the readings were not constant.

  • Observations:
  • Weight of sieve = 50 gm
  • Weight of maize seeds = 100 gm
  • Weight of sieve + maize seeds = 150 gm
  • Water = 1000 ml
  • Table : Following table shown the time and weight of maize
Time  Weight of seed
10:30 100
11:00 112
11:30 114
12:00 118
12:30 120
1:00 122
1:30 122
2:00 126
2:30 128
3:00 128
4:30 130
5:00 130
8:30 132
9:30 134
10:30 136
11:00 136
11:30 138
12:30 138
1:00 138
1:30 138
  • Result and Conclusion:

From the above observations I found that the soaking time of maize seeds is 12 to 14 hours.

  • Trial 3
  • Objective : To find out soaking time of maize seeds (African Tall) .
  • Observations

    1.Weight of maize = 100 gm

    2.Weight of sieve = 94 gm

    3. Water added = 600 ml

 Time  Weight of maize (gm)
12:30 100
1:30 128
2:30 134
3:30 136
4:30 140
5:30 140
6:30 142
8:30 146
9:30 148
10:30 150
11:30 154
12:30 156
8:00 156
  • Conclusion : From this experiment soaking time of african tall maize seeds was 12 hours at normal water temperature.
  • Observations:
  • Inside Temperature and Relative Humidity
 Time DBT WBT RH (%)
12:30 19 17   82
1:30 22 17  60.4
2:30 25 18   50
3:30 25 18   50
4:30 26 17   39
5:30 26 17   39
6:30 26 16   33
8:30 25 16   38
9:30 25 17   43.9
10:30 25 16   38
11:30 24 15   36
12:30 24 15   36
8:00 23 10   13
  • Outside Temperature and Relative Humidity
 Time DBT WBT RH (%)
12:30 35 25   44
1:30 34 22   35
2:30 31 21   40
3:30 30 20   39
4:30 30 19   34
5:30 29 19   38
6:30 25 18   50
8:30 24 18 56 
9:30 20 16   66
10:30 20 16   66
11:30 19 15   65
12:30 19 15   65
8:00 23 16   47
  • Trial 4
  • Objetive : To find out soaking time of maize grains at warm water.
  • Materials
Sr. no Material Quantity
1. Maize seeds 100 gm
2. Thermometer 1
3. Vessel 1
4. Sieve 1
5. Insulation box 1
  • Procedure :
  1. I had taken 100 gm of maize seeds.
  2. Then I take sieve of 94 gm weight and added maize seeds and weigh it by the weighing balance.




3.Added warm water (45°C) into the vessel until the seed fully immersed into it.

  • meausrement of temperature of water

4.Vessel were placed insulated box. (Tharmcol box)

5.After half hour of interval sieve was withdrawal from the vessel and weight it.

6.I was recording the readings until the values were get constant

  • Observations

    1.Weight of maize = 100 gm

    2.Weight of sieve = 94 gm

    3. Water added = 800 ml

Time Weight of maize (gm) Water Temp. (°c)
10:00 194 45
11:00 218 45
12:30 234 45
2:30 240 45
4:00 242 45
7:00 250 45
9:00 250 45
  • Conclusion : From above observation the soking time 8 hours at maintain warm water and at the insulated box.
  • Results
Trial 3 Trial 4
1.Initial weight of maize = 100gm 1.Initial weight of maize = 100gm
2.Final weight of maize =156 gm 2.Final weight of maize =156 gm
3. Initial amount of water =600ml  3.Initial amount of water =1000 ml
4.Final amount of water = 440 ml 4.Final amount of water= 720ml
 5.Time of Soaking = 12 hr. 5.Time of soaking = 8 hr.
6.Water Temp. = 23°c 6.Water Temp. = 45°c