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【社会人文】草莓有助于人体对抗氧化剂的吸收

More Strawberries, More Antioxidant Absorption

Agricultural Research Service (ARS) scientists have assessed the human body's capacity for absorbing certain antioxidant compounds in strawberries, and have found that the absorption of one key beneficial plant chemical was not "maxed out" as volunteers ate more of this popular fruit. Foods high in antioxidants may be excellent sources of healthful compounds, and researchers are striving to learn more about their ability to be absorbed and utilized within the human body.
The study was conducted at the ARS Beltsville Human Nutrition Research Center (BHNRC) in Beltsville, Md., where scientists have pioneered methods for identifying and measuring various plant compounds in fruits and vegetables. Physiologist Janet Novotny, with the BHNRC's Food Components and Health Laboratory, led the study, which was published recently in the Journal of Nutrition.
Marketed year-round, strawberries are the fifth most consumed fresh fruit in the United States, and consumption more than doubled in the past decade, according to experts. Strawberry's antioxidants come in the form of both long-established vitamins and newly defined plant chemicals. Berries are particularly well endowed with a series of compounds called anthocyanins--the source of the berries' blue, purple and red pigments.
In the study, 12 volunteers consumed three different serving sizes of strawberries during three separate treatment periods. Each two-day meal treatment included either 3.5 ounces, 7 ounces, or 14 ounces of blended strawberries, along with a full diet of carefully controlled foods. Each treatment period was separated by a one-week break.
The study showed that the human body is capable of assimilating more anthocyanin pigments as intakes increase. The results will help nutrition scientists evaluate the healthful properties of individual anthocyanins and aid plant breeders in developing varieties with optimal anthocyanin content.

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草莓有助于人体对抗养化物的吸收

Agricultural Research Service (ARS) scientists have assessed the human body's capacity for absorbing certain antioxidant compounds in strawberries, and have found that the absorption of one key beneficial plant chemical was not "maxed out" as volunteers ate more of this popular fruit. Foods high in antioxidants may be excellent sources of healthful compounds, and researchers are striving to learn more about their ability to be absorbed and utilized within the human body.
农业研究部门(ARS)的科学家已经对人体吸收草莓中某种抗氧化物的能力进行了评估,并且发现一种关键的有益的植物化学物的吸收并不是像自愿者想像的那样,即吃得越多这种受欢迎的水果吸收得也就越多。富含抗氧化物的食物可能是有益化学物的良好来源,并且研究者正在努力了解更多关于人体对它们的吸收和利用的能力。

The study was conducted at the ARS Beltsville Human Nutrition Research Center (BHNRC) in Beltsville, Md., where scientists have pioneered methods for identifying and measuring various plant compounds in fruits and vegetables. Physiologist Janet Novotny, with the BHNRC's Food Components and Health Laboratory, led the study, which was published recently in the Journal of Nutrition.
这项研究在马里兰州Beltsville的ARS Beltsville人类营养研究中心(BHNRC)进行,在那里,科学家们用首创的方法对水果和蔬菜中的各种植物化学物进行鉴别和测量。生理学家Janet Novotny同BHNRC的食物成分与健康实验室合作领导了这项研究,并且研究结果近期发表在《营养学》杂志上。

Marketed year-round, strawberries are the fifth most consumed fresh fruit in the United States, and consumption more than doubled in the past decade, according to experts. Strawberry's antioxidants come in the form of both long-established vitamins and newly defined plant chemicals. Berries are particularly well endowed with a series of compounds called anthocyanins--the source of the berries' blue, purple and red pigments.
专家谈到,市场上整年的草莓最多只有全国消费掉的新鲜草莓的五分之一,并且现在的消费量比过去十年的两倍还要多。草莓中的抗氧化物以早已明确的维生素和最近明确的植物化学物的形式存在。浆果类特别富含一类叫做花青素的化学物,它们是浆果蓝色、紫色和红色色素的来源。

In the study, 12 volunteers consumed three different serving sizes of strawberries during three separate treatment periods. Each two-day meal treatment included either 3.5 ounces, 7 ounces, or 14 ounces of blended strawberries, along with a full diet of carefully controlled foods. Each treatment period was separated by a one-week break.

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作者:admin@医学,生命科学    2011-09-08 05:11
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