CAB129-37 — Page 394

Page 394

The free fatty acid, iodine values and colour of the oils are shown in the following table:-

Table 24.-Characteristics of Groundnut Oils from Samples with Various

Harvesting and Heat Treatments, 1948

I. Valencia:

0-234

...

Mean...

il. Natal Common:

0

2

3

•

4

Mean...

III. Spanish Bunch:

0

1

2

Mean...

:

:

:

FFA per cent. (as oleic acid)

Colour (1" cell),

Lovibond units

Iodine value

Red

Yellow

0.14

99.1

0.3

1.8

0.13

98.8

1.0

4.3

0.15

98.8

1.6

8.4

0.16

98.6

2.3

13.8

0.10

99.2

1.6

8.7

0.15

98.9

1.4

7.4

0.1

95.2

0.8

3.9

0.1

95.2

1.0

4.1

0.1

94.7

1.7

4.8

0.1

96.0

1.1

4.6

0-1

95.7

1.6

8.2

0-1

95.4

1.2

5-1

0:2

97.5

0.4

2.1

0.16

98.0

1.2

12.0

0.1

97.0

1.3

11.3

0.1

98.9

1.6

18.3

0.1

98.9

1.1

12.0

0.13

98.0

1.1

11-1

Professor Hilditch commented, December 8, 1948, as follows:-

·

“1. In colour and in low free acidity the oils from the cured' nuts in series 1 and 2 far surpass any raw groundnut oil which has hitherto been on the English market. If this can be maintained on the full scale, with corresponding care in avoiding damp and mould-infestation during storage and transport of the bulk deliveries, it will be an outstanding achievement and an eye-opener' to the English groundnut oil trade.

"The specimens are a complete proof of the thesis that nature produces the seed oils in an almost neutral colourless state, and that any deteriora- tion is due to bad and inefficient handling.

"2. The three varieties submitted yielded oil of unusually high iodine value. If other varieties are being grown which give oils with iodine values of 85-90, it might be better, ceteris paribus, to concentrate on the latter."

Sunflowers

13. ALTERNATE CROP STUDIES

No pure seed of any variety except the somewhat heterozygous Hungarian was obtained sufficiently early in the season to have a fair trial. The seed of other varieties used in the earlier plantings had been derived from the produce of a variety trial, and the evident unevenness of the crops was probably due to

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