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Food Science
Food Science is a multi-disciplinary field involving chemistry, biochemistry, nutrition, microbiology and even engineering of a biological nature. It integrates broad-based knowledge and focuses it on food. Quality, safety, and nutrition questions are just some of the areas dealt with in this category.
1,441 Questions
Why do all chips have a golden brown colour but boiled potatoes remain white?
The higher temperature of frying is needed to produce the brown color. Water can't get to that temperature.
What are the two methods of heat treating milk?
Pasteurization is the process of heating liquids, such as milk, to destroy microorganisms that can cause spoilage and disease. This process was developed by Louis Pasteur (1822-1895) as a method to control the microbial contamination of wine. Pasteurization is commonly used to kill pathogenic bacteria, such as Mycobacterium, Brucella, Salmonella, and Streptococcus, common to milk and other beverages. There are three methods for pasteurizing milk. In the first method, low-temperature holding (LTH), milk is heated to 145°F (62.8°C) for thirty minutes. In the second method, high-temperature short-time (HTST), milk is exposed to a temperature of 161°F (71.7°C) for fifteen seconds. This technique is also known as flash pasteurization. The most recent method allows milk to be treated at 286°F (141°C) for two seconds; this approach is referred to as ultra-high temperature (UHT) processing. Shorter-term processing results in improved flavor and extended product shelf life.
What is the effect of UV rays on food items?
the UV rays disinfect the food helping it last longer without residual chemichels
How does pasteurization help people?
The impact of pasteurisation was most on industries and exports. With the introduction of this technique, milk products could be stored for a longer period of time before becoming sour.This ensured a healthy and safe delivery of various products to distant areas for sale and hence increasing exports.
There are no artificial ingredients in plain potato chips. Look at the label. They are made from potatoes, vegetable oil and salt. There is no science that shows that potato chips cause acne. If that were true, then nobody would have had acne before potato chips were invented. Acne is caused by bacteria.
It is true that eating a lot of potato chips as part of a high calorie diet will contribute to weight gain. One ounce of chips contains about 300 calories, and a medium sized bag contains several ounces. Overweight people should not eat potato chips (or donuts, cookies, cheeseburgers, and other high calorie foods.)
There is also no science that shows that chips cause dehydration or sore throats. Everyone should drink more water, regardless of whether they eat potato chips or not. For a normal, healthy person, a few chips are harmless.
Answer
Potato chips are high in carbohydrates and contain a lot of sodium, and high amounts of grease. Eating too much of them causes weight gain, and possibly obesity.
What is the number of drops in a teaspoon?
There are 60 metric drops in a 5ml teaspoon. You'll find many variants on this ranging from 50 - 120, but 60 is a good bet. Generally, drops are not a precise measurement.
There are several exact definitions of a "drop". Here are 3 of them: * the "metric" drop, 1/20 ml (50 μL), which equates to 60 to a 5ml teaspoon.
* the medical drop, 1/12 ml (83⅓ μL). * the Imperial drop, 1/36 of a fluid dram (1/288 of an Imperial fluid ounce or 1/1440 of a gill (approximately 99 μl).
Note: There are 360 drops in a U.S. fluid ounce.
What are class II preservatives?
These are preservatives which are synthtic compounds like salts of Bezoic Acid and use of more than one class ii preservative in banned by PFA act
Does fat free mean cholesterol free?
yes it is about the same thing such as nonfat yogurt and fat free yogurt
How is cholesterol carried around the body?
High-density lipoproteins dissolve cholesterol :D I hope this helps you out!
What are the affects of food adulteration?
these diseases are called STD.the most common one`s are
- HIV(AIDS) 1 and 2
- Syphilis
- gonorrhea
- chlamydia
- herpes type 1 and 2
- HPV(human papilloma virus)
- hepatitis a,b,c and d
researchers at Scripps Clinic of San Diego in the US divided a group of 100 obese subjects into three equal groups: One group ate half a grapefruit before each meal, one group drank a glass of grapefruit juice before each meal, and one group was instructed not to eat any grapefruit or drink any grapefruit juice. Subjects followed their regimens for three months, while continuing to eat as they normally would.
The results were remarkable. Those in the group that ate grapefruit with each meal lost an average of 3.6 pounds, while subjects in the grapefruit juice group lost an average of 3.3 pounds. A few of the subjects in both of these groups lost nearly 10 pounds. But the average weight loss in the group that consumed no grapefruit was less than one pound.
So... what dietary magic makes grapefruit such a helpful weight-loss aid? Researchers believe that grapefruit contains chemical properties that assist in the management of insulin levels - a potential boon to dieters and diabetics alike.
researchers measured the insulin and glucose levels of all subjects. When the test was over, those in the two grapefruit groups had lower levels of insulin and glucose than they did at the beginning, while levels in the non-grapefruit group were unchanged.
enzymes in grapefruit help control insulin spikes that occur after a meal, which frees the digestive system to process food more efficiently. The result: Less nutrients are stored as fat. And like all citrus, grapefruit is rich in water-soluble fibre, which has been shown to enhance digestion while helping regulate the absorption of carbohydrates that would otherwise contribute to blood sugar spikes.
yes
While grapefruit may help you lose weight, it is not a magic bullet. Too many people feel that they need to concentrate on a certain food to help them lose weight and it is not the best answer. If you just pick one food to eat then you will soon get tired of it.
To maximize your weight loss you need to eat a balanced and healthy diet. That includes vegetables, fruit, meat, poultry, fish and dairy. Cutting out any of these and your body will be missing vital nutrients and vitamins.
And in the long run it's not too hard to eat healthy.
What are the three basic kinds of foods?
Dairy- Yogurt, Cheese, and MilkFruit and Veg- apples, bananas, tomatoes, ect.Starchy- Potatoes, Bread, Rice, Pasta.Protein- Meat, Fish, Eggs, Beans.Fatty Foods/High in Sugar- Sweets, Fizzy Drinks, Cakes, Biscuits, ChocolateWell I hope this helped you.
What is the acid found in normal milk called?
In normal, unspoiled milk, there are no acids found. As milk starts to spoil, lactic acid becomes the predominate acid.
Why do pop rocks and soda fizz?
Actually, carbon dioxide is shot into the soda and that what makes it so fizzy.
can you explain why that happens?-flub flub
Rennet is added to milk and forms curds and whey. The whey is then tapped off leaving the curds.
Fructose, also known as fruit sugar, levulose, and laevulose, is a simple mono-saccharide which the body can use for energy. It is often found in combination with glucose as the disaccharide sucrose (table sugar), a readily transportable and mobilizable sugar that is stored in the cells of many plants, such as sugar beets and sugarcane. There is more information at the related link.
Why do bananas turn brown when they get bruised?
It is due to a defense mechanism in the fruit, which is activated when the fruit is cut from the tree.
There are three main factors involved in the ripening and browning process, they are: enzymes, oxygen and phenols. Enzymes are protein-like substances that speed up or initiate chemical reactions. Phenols are defensive mechanisms the plant uses to fend off insects and microbes. The specific enzyme is called polyphenoloxidase. When the banana is attacked, the phenols are activated in the presence of oxygen by this enzyme. In this process the brown color is produced as a side effect. The first time the banana is attacked is when it is cut from the tree. Exposure to cold air, certain gases, and physical damage of the fruit will hasten the process.
