Definitions: jargon
The fruit of cacti, known as dragon fruit or pitaya, is a segmented,
vine-like cactus crawling with aerial roots. Being an epiphyte,
it clings to its support and can obtain nutrients from organic material
cracks where concentrates. The fleshy succulent stems are
three sided (occasionally four or five), and the lobed along
ridges,Small swellings which have equipped with short spines.
Pitaya has already received worldwide recognition as an ornamental plant for its
large, scented, night-blooming flowers.
Its fame is now spreading throughout the world for its fruit, especially in countries such as
Asian Vietnam, Taiwan, Malaysia, and the
Philippines (Mizrahi, Nerd, & Nobel, 1997 ) .
Pitaya comes in a number of varieties;three varieties that have been commercialised are Hylocereus
undatus (Red Pitaya), which has red-skinned fruit with white flesh
, Hylocereus polyrhizus, which has red-skinned fruit with
red flesh, and Hylocereus megalanthus (Yellow Pitaya), which has
yellow-skinned fruit with white flesh (Arcadio, 1986 ; Barbeau,
1990) In Malaysia, about 927.4 ha have been established for planting
of pitaya for the local and export markets (Cheah & Zulkarnain,
2008, and the red-flesh pitaya
farm size is increasing substantially due to a high demand. The red-flesh
pitaya has recently drawn much attention from growers worldwide, not only because of its
red - purple color and economic value as a food product, but also for its antioxidative activity
from the betacyanin contents (Wybraniec
& Mizrahi, 2002). In cacti, are the most important fruit pigments
betacyanins and betaxanthins (Wybraniec et al ., 2001). Betalains,
composed of red and yellow - violet betacyanin betaxanthins,
are water-soluble pigments that provide colours in flowers and fruits
.
Efforts have been made to study the chemistry of betalains in H.
polyrhizus (Stintzing, Conrad, Klaiber, Beifuss, & Carle, 2004;
Wybraniec & Mizrahi, 2002 ; Wybraniec et al ., 2001). Recently, Ariffin
et al. (2009) profiled the fatty acid composition of pitaya seed
oils. However, there is little information available on the
valuable chemical compounds present in pitaya seed oil. The
aim of this study was to characterise the functional chemical components of
H. undatus seed oil (WFSO) and H.polyrhizus seed oil (RFSO) .A
Asby-product of pitaya juice manufacturing, the tiny black seeds of the pitaya
could be utilised as a potential new source of specialty oil
.
การแปล กรุณารอสักครู่..