International Gold Number 1
The International Gold Number 1 (IG1) is a metric used to measure the color stability of oils and fats. It indicates the amount of iodine that can be absorbed by a fat or oil before it undergoes a visible change in color. The higher the IG1, the more stable the fat or oil is to oxidation and other color changes.
IG1 is determined by measuring the absorbance of a fat or oil sample at 440 nm and 540 nm after it has been treated with iodine. The absorbance at 440 nm represents the amount of iodine that has been absorbed, while the absorbance at 540 nm represents the turbidity of the sample. The IG1 is calculated by dividing the absorbance at 440 nm by the absorbance at 540 nm.
IG1 is an important indicator of the quality of fats and oils. Oils and fats with a high IG1 are more resistant to rancidity and other forms of spoilage. This makes them ideal for use in products that have a long shelf life, such as canned goods and processed foods.
IG1 can also be used to identify adulterated oils and fats. Adulterated oils and fats often have a lower IG1 than pure oils and fats. This is because adulterants, such as cheaper oils or fats, can absorb iodine more easily than pure oils and fats.
The IG1 is a valuable tool for the food industry. It can be used to ensure the quality of fats and oils, and to identify adulterated products.
原创文章，作者：Kevin，如若转载，请注明出处：https://fangeou.com/9349.html
