Classification of Food
Foods are classified into three types such as
- Perishable foods
- Semi-perishable foods
- Staple or non-perishable foods
Perishable Foods: perishable foods are cooked foods that include many raw fruits and vegetables, meat, fish, milk and poultry. It can be stored in refrigerator and used for few days.
Semi-perishable Foods: semi-perishable foods include dry mixes, dried foods, grain products and flour and can be stored for about six months to one year.
Non-perishable Foods or Staple Foods: this type of foods can be stored for long term if stored properly and this include spices, sugar, dry beans and canned goods.
What Affects Storage Life?
There is no exact method to determine quality maintenance and the storage life is affected by following factors such as
- Humidity level
- Freshness of the food
- Type of storage container
- Characteristics of food item
- Temperature in which it is stored and length of time it is stored.
Tips to Store Foods in Refrigerator
- It is always important to store foods in air-tight container and foods that stain plastic containers can be stored in glass containers.
- Heated food should be refrigerated within two hours to make them stay fresh.
- Allow air to flow freely inside the refrigerator by not congesting them with foods.
- Since temperature fluctuates, keep eggs on shelves not in doors to maintain freshness.
- Keep vegetables and fruits in separate drawers and don’t wash them before refrigerating.
- To prevent bruising, bubble wrap can be used in the bottom of the fruit.
- Foods that have tendency to freeze should be filed only three quarters to allow room for expansion.
- When using the frozen foods such as frozen milk or meat to eat, allow them to defrost for some time and then use.
Windows are like a heartbeat of the house. The number of windows in the house is always greater than the number of doors. It provides way for fresh air to come inside the house. Sometimes, air is also accomplished with dust and waste particles which leave them unclean. Since it provides way for fresh air, it is important to keep the windows clean and tidy by cleaning it regularly.
Even though cleaning process is not easy, it can be simplified by following certain techniques and equipment. Here are some of the windows cleaning tips that will be useful when you clean the windows next time.
- Stainless steel squeegee or professional brass that can be obtained from the janitorial stores
- Window cleaning solution such as detergent with ammonia, vinegar or other natural detergents
- Damp cloth to remove dirt
- Sponge or dry cloth
- Since windows are made of glass, more care should be taken to clean them as rubbing can cause scratches on glasses.
- First step is to wipe dirt with damp cloth or vacuum cleaner that removes dirt and dust. Lightly wet the window with clean sponge.
- Use detergent and apply it all over the glass.
- Wipe it out using the squeegee to prevent stop drips from running down over the clean window.
- Squeegee blade should be cleaned with dry cloth each time and continue this process till the job is completed.
- Newspapers work best on glasses and hence give the finishing touch by wiping it with newspapers.
This gives shiny appearance to windows and fresh air through windows is guaranteed inside house.
Using the range of evolving technologies such as solar thermal energy, solar heating, solar architecture, solar photovoltaic and artificial photosynthesis, radiant heat and light from the sun is converted into solar energy. The photovoltaic panels capture and convert solar power into electrical energy used for commercial and residential usage.
Solar energy is broadly classified into two types depending on the way they capture, convert and distribute solar energy. They are
- Active solar
- Passive solar
Passive Solar Power
It works without involving any mechanical device or conventional energy sources. Examples: sunrooms, greenhouses, solariums: heat is absorbed by interior and retained when the sun ray’s pass through the glass window. Heating cost is reduced into half by installing this method in house.
Active Solar Power
It works by the use of external sources of energy. The external energy is needed to power blowers, pumps and other types of equipment to collect, store and convert solar energy. Examples: commercial and residential buildings – the energy is absorbed and stored as electricity used for heating and cooling systems.
How is Solar Energy Produced?
Solar rays from sun are converted into solar energy with the help of solar panels that is used in home and business. Solar thermal and photovoltaic are the two main types of solar panels.
Solar Thermal Panel: energy is used to heat water used for heating and washing. Example of this type is solar water heater.
Energy from sun is converted into electricity with the help of photovoltaic effect that is used for residential and commercial use. PV panel is made of silicon-based semiconducting material that is sandwiched between two electrical contacts. Electricity is generated depending on the heat from the sun. So, solar panel should be placed on sloping south-facing roof where maximum heat is obtained.
The antireflective substance that is coated above semiconductor makes the sunlight gets absorbed instead of scattering it away. When sunlight strikes the panel, it gets absorbed which makes positive charge on one side and negative charge on other side that makes the electron to travel in the same direction creating electric current.
DC (Direct Current) is produced from panel which cannot be used directly for residential or commercial use. Hence it has to be converted to AC (Alternating Current) using inverter. The AC current is then sent to building’s fuse box and then to the appliances that need it. Electricity generated from panels can be measured using the metering box. Installing photovoltaic panel costs more but it generates renewable energy.
Advantages of Solar Energy
- Accessibility of solar power in remote locations
- More cost effective
- Abundance of solar energy
- Maintenance free
With about 12,000 species of ants in the world, they are social insects. In search of tasty foods, these ants invade our homes and cause more trouble to humans. Some of the ant types commonly found in our house include thief or grease ant, argentine ant, pavement ant, pharaoh ant and the odorous house ant. One of the types of ants named carpenter ants destroys the woods present in the house.
Ants are also essential to eat spiders, silverfish, larvae of fleas, bed bugs, clothe moths and hence play an important role in environment. It is not good to eliminate them completely but it is easy to control them from getting the foods. Since ants are very essential to protect the nature, following the natural methods of eliminating them is advised than by using chemicals.
Here are some of the natural ways that helps to get rid of ants easily.
Lemon juice is rich in citrus acid that leaves a fresh odor which prevents ants from getting in. pour lemon juice near the hole of ants for better results.
Cinnamon is one of the best sources to get rid of ants. Spray the cinnamon powder on the areas where ants are seen most. The cinnamon flavor is not preferred by ants and it also does not cause any side effects to kids.
Apply talcum powder on the holes of ants and this is one of the easiest ways to remove ants from house. The fragrance from the powder dominates the fragrance of food substances thus ants leave the house.
Mix baking soda and sugar and apply the mixture in the place where ants are seen mostly. Once the ants taste the mixture, it dies.
Mix apple vinegar and water in equal proposition in spray bottle and spray in the way of ants. This process kills large number of ants at one time. Also spray the solution in the areas where ants are seen in large numbers.
Mint leaves have the original refreshing smell that does not allow ants inside house. Make the mint to dry and make powder from it. Apply the powder to areas where ants are seen in large number. This process does not allow ants to come inside house leaving fresh and refreshing smell.
One of the best ways to bring cool breeze inside house during summer is to have indoor plants. Indoor plants not only bring cool breeze inside but also reduces pollution inside house. Let us have a look at some of the indoor plants that can be kept inside house to get pure air.
Here are some indoor plants proved to remove toxins from indoor and approved by NASA. These plants are proved to remove certain toxins such as formaldehyde, benzene and trichloroethylene present in the house. Thus indoor plants maintain healthy atmosphere in the house removing other toxins.
Aloe Vera is an herbal plant that has many benefits. It removes formaldehyde in the air and has surprising benefits on skin. Aloe Vera is rich in minerals, vitamins, amino acids and fatty acids. It plays an important role in digestion and also helps in detoxification. It is very good for cardiovascular health and also boosts the immune system. Aloe Vera has great benefits on skin and removes tan and other skin problems leaving the skin smooth and younger. With its several benefits, it is one of the important plants that should be present in every house.
It is a species of date palm that grows about 2-3 metres. It removes formaldehyde, xylene and toluene from the atmosphere making it safer to breathe in. The fruit of this plant is very sweet and has many health benefits.
Also known as butterfly palm and bamboo palm, it is one of the species of flowering plants. It is an effective humidifier that transpires 1 litre of water in 24 hours and also filters xylene and toluene from the air.
Boston fern removes formaldehyde from the atmosphere and also acts as natural humidifier. This plant requires more care such as humidity is more important to grow them and thrives in low-light conditions. It is one of the best plants that purifies indoor air and provides healthy air to breathe.
This plant removes formaldehyde, benzene, xylene, toluene and trichloroethylene from the atmosphere. Benzene present in detergents, cigarette smoke, and pesticides, off-gasing of other synthetic materials is filtered by this plant making it an important plant present in every home.
Also known as money plant, this plant is found to be effective in removing formaldehyde and carbon monoxide from indoor. It requires less sunlight and medium watering and it is one of the best plants to grow both in indoor and outdoor. The plant grows both in water and soil.
Peace lily filters benzene, formaldehyde, trichloroethylene, xylene, toluene and ammonia from indoor making it one of the important plants to grow indoor. This plant requires little care and grows in humid conditions with low light.
Kimberly Queen Fern
This plant filters formaldehyde, xylene and toluene from air and grows best in bright filtered light. The plant requires humid condition to grow and hence best suited to grow as indoor plant.
These are some of the indoor plants that remove toxins from the atmosphere and improve air quality inside the house.