Product Name: Grapefruit (Citrus × paradisi)
Description:
Grapefruit is a premium citrus fruit originating from a natural cross between the pummelo (Citrus maxima) and the sweet orange (Citrus sinensis), first documented in Barbados in the 18th century. Its name comes from the way the fruit grows in clusters of several to dozens, resembling grapes on a vine. In China, it is also widely known as "West Pomelo" , a name reflecting its Western origin that was coined when the fruit was introduced to Guangdong and Fujian in the early 20th century. Today, grapefruit is recognized worldwide for its low calorie content, high vitamin C levels, and distinctive sweet-tart-bitter flavor profile.
A Citrus That Delivers on Every Level:
Grapefruit stands out among citrus fruits for its complex flavor and exceptional nutritional density. Each fruit contains only about 82 calories but is packed with vitamin C (40mg per 100g), vitamin B1, B2, citric acid, potassium, calcium, fiber, pectin, and folate. It also contains naringin (528–743 mg per liter of juice) and limonin – bioactive flavonoids with heat-clearing, digestive-supporting, and skin-nourishing properties.
Flavor: Sweet, Tart, and Distinctively Bitter
The defining sensory characteristic of grapefruit is its bright acidity balanced by a signature bitter note, derived from naringin and limonin compounds. This flavor profile sets grapefruit apart from all other citrus – it is refreshing, complex, and unmistakably distinctive. White-fleshed varieties like Marsh are higher in acid and more pronounced in bitterness, while red-fleshed varieties such as Ruby Red and Star Ruby are significantly sweeter and less acidic, with the bitterness softened by higher sugar content.
A Spectrum of Colors and Flavors
Grapefruit is commercially classified by flesh color, each with distinct characteristics:
White Grapefruit (Marsh): Pale yellow flesh, high acidity, pronounced bitterness. A traditional variety still highly valued in certain markets for juice production.
Pink Grapefruit (Ruby Red): Rose-colored flesh, balanced sweet-tart profile, moderate bitterness. A bud sport mutation discovered in Texas in 1929, now a significant commercial cultivar worldwide.
Red Grapefruit (Star Ruby): Deep red flesh, the most intensely colored variety, with high lycopene content and reduced bitterness. Star Ruby is a radiation-induced mutation prized for its thin skin, high juice rate, and seedless fruit, with sugar content often exceeding 10° Brix.
Appearance:
The fruit is flat-round to round, with a diameter of 10–15 cm. The skin is pale yellow to orange-yellow when ripe, smooth and glossy with fine oil cells, and medium-thick but relatively easy to peel. The flesh is divided into 10–14 segments, with a tender, juicy texture. Average fruit weight ranges from 300–350g for standard varieties to over 440g for large-fruited types like “Yueyin Kouke Grapefruit”. Most commercial varieties are seedless or nearly seedless.
Key Commercial Advantages:
Low Calorie, High Nutrient Density – 82 calories per fruit with high vitamin C, fiber, and bioactive flavonoids
Distinctive Flavor – Complex sweet-tart-bitter profile with strong consumer recognition
Color-Based Market Segmentation – White, pink, and red varieties cater to different consumer preferences and price points
Good Storage Life – Stores at room temperature for up to 3 months without refrigeration
Extended Harvest Window – Available from August through May in major production regions, with peak season in autumn and winter
Versatile Use – Excellent for fresh eating, juicing, and processing; grapefruit juice is a major commercial product worldwide
Early Bearing – Grafted trees fruit within 1 year, with full production by year 4–5
Important Consumer Warning:
Grapefruit and its juice contain furanocoumarins (such as bergamottin) that significantly inhibit the intestinal enzyme CYP3A4, affecting the metabolism of dozens of medications including statins, blood pressure drugs, and anti-anxiety medications. Patients taking such medications should avoid grapefruit entirely. Additionally, individuals with high blood pressure, cardiovascular conditions, or kidney dialysis needs should limit consumption and space grapefruit intake at least 2 hours apart from medication.
Growing Regions:
Native to Barbados, grapefruit is now cultivated worldwide in subtropical regions. Major production areas include the United States (Florida and Texas), Israel, South Africa, and China (Guangdong, Fujian, Yunnan, Sichuan). In China, Fujian’s Pinghe County is a core production region for premium grapefruit, and Yunnan's Yuxi, Xishuangbanna, and Dehong regions produce grapefruit that matures about 20 days earlier than other Chinese regions.
Harvest Season:
August to January (with peak season October–November). In the U.S. Florida region, harvest runs from September through May, with fruit reaching peak sweetness from January to May. A premium autumn-winter citrus that delivers low-calorie nutrition, distinctive flavor, and strong year-round market potential for fresh consumption and juice processing.