Emergency Food Storage: Freeze Drying vs. Dehydration - PowerPoint PPT Presentation

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Emergency Food Storage: Freeze Drying vs. Dehydration


Freeze drying method is most popular and widely acceptable for preserving foods for satisfying emergency needs. The reason behind this popularity is that the tastes and flavors remain unchanged. It keeps food with the natural flavor and taste for long time duration. – PowerPoint PPT presentation

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Title: Emergency Food Storage: Freeze Drying vs. Dehydration

Emergency Food Storage Freeze Drying vs.
  • There are several ways for emergency food
    storage. Freeze drying and Dehydration are two
    popular methods for emergency food storage.
    Among all the food storage techniques freeze
    drying is the best because of its advantage along
    with proper effectiveness and efficiency.
  • If you have never attempted freeze drying process
    for food storage you may understand that how it
    varies from other storage methods especially
    dehydration. Both are used to protect foodstuffs
    for satisfying long time and emergency needs with
    realistic usability.

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  • Freeze dried food and food dehydration methods
    utilize limitlessly distinctive strategies to
    "dry" out food. Both are made utilizing
    safeguarding techniques that annihilate the
    humidity and perishable substance out of food,
    keeping it from ruining for an unimaginably long
    time. These are uniquely dissimilar to each other
    from multiple points of view. The following
    comparative discussion proves that freeze drying
    is the best food storage technique for emergency
    food storage.

Food Dehydration Technique
  • Food dehydration is prepared by subjecting
    foodstuffs to high temperature. Commonly this
    method is applied sun drying or air drying in
    high temperature. It can be utilized within home
    storing supplies due to its long timeframe with
    genuine usability. Dehydrated foods can be
    utilized for day by day cooking and eating. In
    case of emergency needs for instance, natural
    catastrophe and earthquake situations dehydration
    technique is used for preserving foodstuffs.

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  • Practically, tastes and flavors will not remain
    unchanged. The dehydration methodology changes
    the taste and composition inside the food. To
    enjoy the food need much of their unique flavor
    and taste.
  • They additionally have a chewier composition.
    Concerning taste, you can get slightly changed
    flavors from dehydrated foods, in the same way as
    sun dried tomatoes, in the event that you cook
    them for quite a while.

  • Nutritional values and vitamins the air and sun
    drying process likewise reduce a significant part
    of the wholesome esteem out of food.

  • The cost of food dehydration process is
    comparatively lower than freeze drying method.
    Since dehydration refers to drying out foods so
    it requires less expense to preserve.

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Freeze Dried Food Technique
  • Freeze dried technique is scientific food
    preservation technique which is known as
    lyophilisation or cryodesiccation. By using
    this Freeze Dried Food Technique for food
    preservation technique perishable substance of
    food becomes imperishable and endures for long
    term usage and transportation.
  • Freeze drying method involves four complementary
    stages for preservation. The first stage is
    pretreatment which includes product formulation,
    ingredient concentration, decreasing high vapor
    pressures and increasing surface area prior to
    freezing foods.

  • The nutritional values and vitamins also remain
    constant as it was earlier of applying freeze
    drying technique on the food for preservation.

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  • From above arguments and discussion it is proved
    that freeze drying is the best method of
    emergency food storage for using long timeframe
    or any emergency situation. Although this process
    is slightly expensive but it provides you natural
    tastes and flavors along with unchanged vitamins
    and nutritional values.

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