Oranges versus orange
juice: Which one might
be better for your health?
Many health advocates
advise people to eat
an orange and drink
water rather than opt
for a serving of sugary
juice. But in ACS’s Journal
of Agricultural and Food
report that the picture is
not clear-cut. Although
juice is indeed high
in sugar, the
the body to
absorb than when
a person consumes them
from unprocessed fruit.
Ralf Schweiggert, Julian Aschoff, and colleagues note that oranges
are packed with nutrients such as carotenoids and flavonoids, which,
among other benefits, can potentially help lower a person’s risk for
certain cancers and cardiovascular disease. But many people prefer to
drink a glass of orange juice rather than eat the fruit. Sugar content
aside, are they getting the same nutritional benefits? Schweiggert’s
team set out to answer that question.
The researchers found that the production of pasteurized orange
juice slightly lowered the levels of the carotenoids, lutein and
β-cryptoxanthin, and did not affect levels of β-carotene and vitamin C.
But at the same time, it significantly improved carotenoid and vitamin
C bioaccessibility — or how much the body can absorb and use. And
contrary to conventional wisdom, although juicing oranges dramatically cut flavonoid levels, the remaining ones were much more bioac-cessible than those in orange segments.
Read more about the research: “In Vitro Bioaccessibility of Carotenoids, Flavonoids, and Vitamin C from Differently Processed Oranges
and Orange Juices [Citrus sinensis (L.) Osbeck],” Journal of Agricultural
and Food Chemistry, 2015, 63 ( 2), pp 578–587.
Nanowire clothing could
keep people warm —
without heating everything else
To stay warm when temperatures drop outside, we
heat our indoor spaces — even when no one is in
them. But researchers have now developed a novel
nanowire coating for clothes that can both generate heat and trap the heat from our bodies better
than regular clothes. They report on their technology,
which could help us reduce our reliance on conventional energy sources, in the ACS journal Nano Letters.
Yi Cui and colleagues note that nearly half of global energy consumption goes toward heating buildings and homes. But this comfort comes
at a considerable environmental cost: it’s responsible for up to a third of
the world’s total greenhouse gas emissions. Scientists and policy makers
have tried to reduce the impact of indoor heating by improving insulation
and construction materials to keep fuel-generated warmth inside. Cui’s
team wanted to take a different approach and focus on people rather
The researchers developed lightweight, breathable mesh materials
that are flexible enough to coat normal clothes. When compared with
regular clothing material, the nanowire cloth trapped body heat far
more effectively, while still maintaining breathability because of its
porous structure. Because the coatings are made out of conduc-
tive materials, they can also be actively warmed with an electricity
source to further crank up the heat. The researchers calculated that
their thermal textiles could save about 1000 kilowatt-hours per
person every year — that’s about how much electricity an average
U.S. home consumes in one month.
Read more about the research: “Personal Thermal Management
by Metallic Nanowire-Coated Textile,” Nano Letters, 2015, 15 ( 1),
COMPILED BY JESSICA ROBERTS
Source: ACS Office of Public Affairs Weekly Press Pac, www.acs.org/content/acs/en/pressroom.html