Identity first

A vegetable in the kitchen, a fruit on the vine.

Cucumis sativus is the accepted botanical name for cucumber, a member of the Cucurbitaceae family. The part we eat develops from the flower's ovary, making it a botanical fruit even though we usually serve it as a vegetable. [1] [2]

Slicing and pickling cucumbers describe useful growing and culinary types, not different nutrients. Pickling varieties can also be eaten fresh in salads. A fresh cucumber intended for pickling is still a different food preparation from a finished pickle in seasoned brine. [2]

Composition and portions

Water-rich does not mean nutrient-free.

The Brazilian Food Composition Table lists these reference amounts for 100 g of raw, unpeeled cucumber. Water and fiber are rounded here for readability. [3]

The water is part of the food itself. The same entry contains small amounts of protein and fat, rather than making cucumber a concentrated source of either. These values describe a reference food, not every cultivar or cucumber on a shopping shelf. [3]

A 50 g portion contains approximately half the amounts shown for 100 g. A finished pickle adds another distinction: brine and seasonings belong to its composition, so a raw-cucumber record cannot describe it completely.

Original food research

What makes cucumber smell like cucumber?

One important aroma compound is (E,Z)-2,6-nonadienal, an aldehyde associated with cucumber-like notes. “Volatile” simply means a compound can enter the air and contribute to aroma; it is not another word for vitamin. [4]

In a 2015 study, Chen and colleagues followed two cucumber breeding lines through five fruit-development stages. They measured aroma compounds, enzyme activity and related gene expression. Six-carbon compounds associated with grassy notes were more prominent early, while nine-carbon compounds became more prominent later. The lines also differed in their aroma profiles. [4]

In the kitchen

Keep the crunch, manage the moisture.

Slice cucumber for sandwiches, dice it into a salad or pair it with yogurt and herbs. Its high water content matters in a bowl as well as in a nutrient table: cucumbers can release liquid and dilute a dressing. Illinois Extension describes salting and draining as one way to remove some of that water. This is a texture choice, not a way to make the cucumber more nutritious. [5]

Wash before cutting; a clean produce brush suits firm cucumber skin. Refrigerate purchased pre-cut cucumber. [6]

For whole cucumbers, Minnesota Extension suggests refrigerator storage for about a week. That is a general quality guide, not a guarantee for damaged or already deteriorating produce. [2]

Across the food–skincare boundary

The preparation changes the identity.

Cosmetic cucumber fruit water can be a steam distillate. [7] Cucumber seed oil comes from the seeds. [8] Neither is the whole fresh fruit, and this food-composition story does not establish their effects on skin.