Fructose
Fructose is a naturally occurring sugar found primarily in fruits, vegetables, honey, sugar beets, and sugar cane[1][2]. It is also known as "fruit sugar" and is a type of monosaccharide, or a "single" sugar[1]. Fructose is the sweetest naturally occurring carbohydrate, being 1.2-1.8 times sweeter than sucrose (table sugar)[1]. It is commonly used as a sweetener in foods and beverages due to its sweetness and ability to minimize lingering sweetness[1].
Fructose is produced commercially from corn or sucrose into a crystalline form for use as an ingredient in packaged foods and beverages[1]. It is also found in high fructose corn syrup, a 55:45 mixture of the monosaccharides fructose and glucose[1]. Fructose can be a natural sugar or an added sugar, depending on its source[1]. It is considered a natural sugar when consumed directly from whole plant foods, and an added sugar when consumed from packaged foods and beverages to which fructose-containing sugars have been added during manufacturing[1].
Fructose has several properties that make it useful in food production. It is highly soluble, blends well in beverages, and is hygroscopic, meaning it is good at absorbing water[1]. It also acts as a humectant, helping to retain moisture in foods[1]. These properties can improve texture and extend the shelf-life of foods[1].
However, excessive consumption of fructose has been linked to various health concerns, including obesity, type II diabetes, heart disease, and even cancer[3][4]. This is because the liver is the only organ that can metabolize fructose in significant amounts, and when people eat a diet high in calories and high in fructose, the liver can become overloaded and start turning the fructose into fat[3]. Additionally, fructose does not suppress appetite as much as glucose does, which can lead to overeating[3].
It is important to note that not all fructose is created equal. Fructose found naturally in whole fruits and vegetables is part of a nutritious diet and is not associated with the same health risks as added fructose in processed foods[3][5]. The American Heart Association recommends limiting the consumption of added sugars, including fructose, to no more than 25 grams (6 teaspoons) per day for women and 36 grams (9 teaspoons) per day for men[3].
In summary, fructose is a naturally occurring sugar with several useful properties in food production. However, excessive consumption of added fructose in processed foods has been linked to various health concerns, and it is recommended to limit the intake of added sugars, including fructose, to maintain a healthy diet[1][3][5].
Citations:
[1] https://foodinsight.org/what-is-fructose/
[2] https://en.wikipedia.org/wiki/Fructose
[3] https://www.healthline.com/nutrition/why-is-fructose-bad-for-you
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2991323/
[5] https://www.medicalnewstoday.com/articles/323818