Lecture 2 (PH)
عدد الخيارات في هذه العجلة: 129
- Important to many consumers but are unable to experience them and must rely on the statement of others.
- These are important to many consumers, but they are unable to experience them and must rely on the statements of others.
- Consumers use ________which they can recognize at and around product such as properties which can be observed, packaging and the information on it, retail outlets, or through media.
- Three Classes of Variables of Eating Research
- Food Variables
- People Variables
- Environmental Variables
- Depends not only on the attributes, but also on people factors.
- It is treated as perceptual/evaluative construct, a phenomenological experience, best categorized as a feeling, emotion, or mood with a defining pleasant or unpleasant character.
- Ways to Measure Acceptance
- For assessment of acceptance, knowledge of the product variables, personal variables, the situational variables, and even outcome of the trade-offs between perceived quality and perceived price has been reached
- Assessment of acceptance is based to an experience, gained directly from the sensory interaction between consumer and product characterized by a positive attitude toward the food.
- Used when a phenomenological (qualitative) approach prevails
- Often measure the subjective responses of a consumer sample to the sensory properties of a product
- Allows for project readjustment..
- comprises of 10-12 persons selected on the basis of product usage and socio-demographics, and they participate in two or three sessions, each for one to two hours.
- In a Focus Group, persons are selected based on what?
- If a group meets on a regular basis, it is called what?
- If additional (or sensitive) information is sought from each individual, it is called what/
- A research method that relies on numeric data to prove insights about a parameter.
- Two approaches to quantitative consumer acceptance testing
- Usually designed to measure the appeal of one food or food product over another.
- The panelists receive two coded samples, and their task is to answer the question:
- If a preference decision is not given, what should you do?
- Special cases of preference testing are:
- These tests are less frequently used with fruit and vegetables
- Preference test can be defined in three ways:
- A research method that relies on numeric data to prove insights about a parameter.
- It can be performed using only one sample, but usually 10 or 12 samples are tested.
- The central question for acceptance testing
- ) questions are used where respondents have to rate whether the level of sensory is “too low”, “just right”, or “too high”
- Necessity of Acceptance Testing
- Most Common Family of Fruits
- Develop from different parts of the ovary, the seed-bearing structure in plants.
- Cultivated primarily in the subtropic and temperate regions.
- Unripened fruits are tart and ripened fruits are generally sweet with varying degrees of acid content.
- Examples of Rosacaeae
- Examples of Rutaceae
- Citrus fruits can be stored in a cool and dry place. For longer shelf life they can be stored between 2 to 10 degree Celsius in well ventilated bags
- Rich in anthocyanins, have strong antioxidant property, and are considered as functional foods.
- Moderately acidic and not very sweet.
- Very fragile and does not store very well for long periods.
- Examples of Ericaceae
- Known as Family of Grapes
- What are the three major species of grapes?
- Commonly used for wine making, fresh consumption, or producing raisins.
- Also known as Allium Vegetables
- Varieties of Grapes
- Characteristic feature is its pungency
- Yellow Onion has a shelf life of ________ in cool dry place.
- Red onion has only ______________ shelf life in cool and dry place
- It must not be stored along with potatoes.
- It can last up to 6 months if stored at around 0C and relative humidity <60%
- Also known as Crucifer Vegetables
- Examples of Cruciferae
- It can be stored for 7-10 days unwashed in perforated plastics at around 4C.
- It is highly perishable and deteriorates rapidly even at low temperatures within day
- They are tuberous vegetables whose seeds are also valuable food sources.
- Examples of Umbellaceae
- Do not store _______ near fruits as it may cause bitter taste.