视频文本

The educational materials
教育材料
presented here were developed by students
是由爱荷华州立大学食品科学和人类营养系的
and faculty of the department of food science
全体教员和学生开发出来
and human nutrition at Iowa State University.
并呈现在这里的
Funding for this project was provided by grants
这个项目的资金
from the American Cancer Society Midwest
是由美国中西部癌症协会和
and the Lance Armstrong Foundation.
兰斯阿姆斯特朗基金会拨款的
The materials are intended for educational use
这些材料是供教育使用的
and are not meant to provide medical advice.
并不提供医疗建议
We welcome your feedback about these materials;
我们也欢迎你们对这些材料提供反馈；
please use te evaluation survey link on the
请使用我们主页上的评估调查连接
home page to provide your comments and suggestions.
提供你们的评论和建议
High fructose corn syrup, what is the truth?
什么是高果糖玉米糖浆
This presentation will seek to explain the information
这次的展示将会向
that consumers should know about high fructose corn
消费者解释他们应该知道的关于
syrup which will be referred to during this
高果糖玉米糖浆的作用，在介绍中我们
presentation as HFCS. By the end of this presentation
把它称作HFCS 报告结束后
you will have learned what high fructose corn syrup is,
你将会学到什么是高果糖玉米糖浆
why food manufacturers use it in food products,
为什么食品生产商会在生产食物时使用它
which food products contain high fructose corn syrup
哪些食品包含高果糖玉米糖浆
and how it is processed in your body,
以及它在人体内如何被处理
common misconceptions about this product and finally
关于该产品常见的误解
the bottom line about this ingredient.
最后是关于构成成分的概要
High fructose corn syrup is a sweetener which is made
高果糖玉米糖浆是一种甜味剂
from corn and used in many different functions in
它是由玉米做成的，在食品生产中被用作
food products. Just as table sugar is made from sugar
诸多用途，蔗糖是由甘蔗所做成的
cane or beets, high fructose corn syrup is made from
同样的道理，高果糖玉米糖浆是由玉米做成的
corn. It is nearly identical in composition to table
它和蔗糖的组成几乎一样，都含有
sugar which is approximately 50% fructose and 50%
大约一半果糖一半葡萄糖
glucose. There are 2 different formulas used for high
高果糖玉米糖浆有两种不同的配方，一种是
fructose corn syrup; either 55% fructose and 45%
百分之五十五的果糖加百分之四十五的葡萄糖
glucose or 42% fructose and 58% glucose. The function
另一种是百分之四十二的果糖加百分之
of the high fructose corn syrup determines
五十八的葡萄糖，食品制造商根据
which formula a food manufacturer would use.
高果糖玉米糖浆的功能来决定使用哪种配方
To understand more about high fructose corn syrup
要想对高果糖玉米糖浆有更多的了解
let’s look at the 2 components that high fructose
我们就来看一下它的两种组成成分
corn syrup contains – fructose and glucose.
果糖和葡萄糖
Glucose and fructose are both a monosaccharide
果糖和葡萄糖都属于单糖
which is the simplest form of sugar. You can think of
单糖是糖类最简单的形式，你可以
these as the smallest building blocks for
把它们想成糖类最小的单位
carbohydrates. Glucose is found in almost all foods
就像一幢楼中的砖块一样，只要含有糖类
that contain carbohydrates and fructose is commonly
和葡萄糖的食物，几乎都含有果糖
found in fruit and honey. Like table sugar and other
果糖通常存在于水果和蜂蜜中
carbohydrates high fructose corn syrup has 4 calories
高果糖玉米糖浆每克含有4卡路里的热量
of energy per gram. A common question about high
这和蔗糖以及其他糖类一样，人们对于
fructose corn syrup is why would manufacturers use
高果糖玉米糖浆比较常见的一个疑问就是
this product. High fructose corn syrup serves many
制造商为什么要使用该产品，高果糖玉米糖浆
functions in food and many of which do not necessarily
在食品中起着很多作用，虽然许多食品
make the product taste sweeter. High fructose corn
没有必要尝起来更甜，高果糖玉米糖浆
syrup can be used as a flavor enhancer for both sweet
可以作为调味剂给食品增加甜味和香气
and spice flavors. For this function manufacturers will
鉴于它的这一功能，食品制造商把它用在
use it in products like baked goods, fruit fillings,
烘烤食品糕点，水果馅
tomato products, canned fruit and beverages. It can
西红柿产品，水果罐头盒饮料当中
also provide fermentable sugars in food products such
在某些食品生产中，例如烘烤食品和酸奶
as baked goods and yoghurt.Other functions that high
高果糖玉米糖浆也可以提供可发酵糖
fructose corn syrup serves are to enhance moisture
高果糖玉米糖浆的其他功能有加强温度控制
control, retard spoilage or increase shelf life,
延缓食品腐败或者增加食品保质期
enhance texture and extend freshness for food such as
提高食品质地，延长食品鲜度，这类食品有
baked goods, granola or breakfast and cereal bars.
烘烤食品，即食麦片，早餐以及谷类条状食品
In addition to its functions to enhance flavor or
除了提高风味
provide fermentable sugars and extend shelf life high
提供可发酵糖以及延长保存期限的功能外
fructose corn syrup can also be used to protect
高果糖玉米糖浆也可以在水果罐头中用来
the firm texture of fruit in canned fruit products.
保持水果坚固的质地
High fructose corn syrup reduces freezer burn in
高果糖玉米糖浆可以减少冷冻水果食品中的
frozen fruit products due to having a lower freezing
冷冻效应，因为它的凝固点比蔗糖要低
point than sucrose which serves a nice purpose in
这使得它在冷冻浓缩饮料中起到了很好的作用
providing frozen beverage concentrates that are
可以直接从冰箱里灌入
pourable straight from the freezer. Finally high
最后，高果糖玉米糖浆
fructose corn syrup also provides greater stability
在酸性含二氧化碳的苏打水中
than sucrose when used in acidic carbonated sodas.
比蔗糖表现出更强的稳定性
Now that you’ve learned the functions of high fructose
既然你已经学了高果糖玉米糖浆的作用
corn syrup here’s a list of all the food products that
以下是所有通常含此成分的食品单
commonly contain this ingredient. Baked goods, yoghurt,
烘焙食品，酸奶
spaghetti sauce, ketchup and condiments,
意大利面调料酱汁，番茄酱和调料
salad dressings, beverages, granola, breakfast and
沙拉酱，饮料，燕麦卷
cereal bars, canned and frozen fruit products and
谷制早餐食品，罐装和冰冻水果食品
frozen beverage concentrates. High fructose corn syrup
还有冰冻浓缩饮料。高果糖玉米糖浆
is processed in your body just the same as table sugar.
同蔗糖一样存在于你的体内

视频及简介

视频简介：

本课程的目标是，向公众提供最新的有关营养方面的信息和话题，内容涵盖饮食因素对于癌症的影响作用，健康的饮食习惯，学校能提供的营养有哪些，咖啡因与癌症的联系，水果蔬菜与癌症预防等。通过本课程的学习，人们可以学习到健康的生活饮食习惯，在每天的饮食中防癌症于未然。