slide đánh giá cảm quan trong nghiên cứu phát triển sản phẩm

Đánh giá cảm quan trong nghiên cứu phát

triển sản phẩm

I Tổng quan về đánh giá cảm quan

Mối liên hệ giữa ngành khoa học cảm quan với

Khái niệm

Đánh giá cảm quan là một phương pháp khoa học được dùng để gợi lên, đo đạc, phân tích và giải thích các cảm nhận của con người đối với sản phẩm thông qua các giác quan là thị giác, khứu giác, xúc giác, vị giác và thính giác.

Mối liên quan giữa đánh giá cảm quan với khoa học tự nhiên và hành vi con người

Cơ sở khoa học của đánh giá cảm quan

Mối liên hệ giữa khoa học cảm quan và các lĩnh vực khác

Mối tương tác giữa kỹ thuật phân tích cảm quan với các lĩnh vực khác trong thực phẩm

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Cơ chế cảm nhận

Mùi và khứu giác

- Đánh giá cảm quan bằng khứu giác • Động tác: hít đều từng đợt

• Cảm giác về mùi tăng nếu ta hít mạnh

• Có hiện tượng mệt mỏi, thích nghi của khứu giác hay lượng mùi giảm

- Các yếu tố ảnh hưởng đến khả năng cảm thụ mùi:

• Tuổi: người lớn phân biệt mùi tốt hơn trẻ em ( trẻ em còn thiếu kinh nghiệm, người già có kinh nghiệm nhưng sự cảm nhận giảm do tế bào bị lão hóa)

• Giới tính: phụ nữ nhạy cảm hơn nam giới • Phụ thuộc vào giác quan

• Tình trạng no đói: khả năng nhạy cảm tăng lên khi đói và giảm khi no

+ Khả năng nhạy cảm tốt nhất trong khoảng 10 – 11 giờ+ Đánh giá lúc không no không đói

- Đánh giá cảm quan bằng vị giác:

• Chập lưỡi nhiều lần, suy nghĩ cảm giác, tiết nước bọt

• Làm sạch lưỡi trước khi đưa mẫu mới vào

Vị và vị giác (tiếp)

- Các yếu tố ảnh hưởng đến khả năng cảm nhận vị:

• Tuổi: trẻ em nhận biết vị ngọt cao hơn người lớn nhưng khó nhận biết vị đắng Người giá khó nhận biết vị ngọt

• Nhiệt độ: Nhiệt độ tăng khả năng cảm nhận vị ngọt tang, vị đắng

Màu và thị giác

- Thị giác là giác quan được sử dụng đến đầu tiên khi người thử tiếp xúc với sản phẩm

- Giúp xác định những tính chất của thực phẩm: độ nhám bề mặt, kích thước hay số lượng, vết lõm bề mặt, độ trong, độ đục, độ bóng loáng…

- Màu nhận được phụ thuộc vào: thành phần quan phổ, độ chiếu sáng, độ nhạy của mắt

- Thị giác đưa ra ngay những so sánh về các đối tượng khi chúng được đưa ra cùng lúc với số lượng không quá lớn

- Màu sắc gây ra những ảnh hưởng khác nhau đến cảm giác them ăn của con người

Mercury the closest

Venus is the second

Jupiter is the biggest

planet of them all Waiting

The slide title goes

● You can organize your ideas clearly

● You’ll never forget to buy milk!

And the most important thing: the audience won’t miss the point of your presentation

You can give a brief description of the topic you want to talk about here For example, if you want to talk about Mercury, you can say that it’s the smallest planet in the entire Solar System

How to enjoy the festival

Mercury is the closest planet to the Sun and the smallest one in the Solar System—it’s

only a bit larger than the Moon

Venus has a beautiful name and is the second planet from the Sun It’s hot and has a poisonous atmosphere

What should you bring

It’s the closest planet to the Sun and the smallest in the Solar

Venus has a beautiful name and is the second

planet from the Sun

Despite being red, Mars is actually a cold place It’s full of iron oxide dust

Plan your festival

Venus is the second planet from the Sun

It’s the farthest planet from the Sun

Despite being red, Mars is a cold place

It’s a gas giant and has several rings

The juicy festival

Jupiter is the biggest planet of them all

It’s composed of hydrogen and helium

It’s the farthest planet from the Sun

Mercury is the closest planet to the Sun

Venus is the second planet from the Sun

Mars is actually a very cold place

Awesome words

—Someone Famous

“This is a quote, words full of wisdom that someone

important said and can make the reader get inspired”

A picture is worth a thousand words

A picture always

reinforces the concept

Images reveal large amounts of data, so remember: use an

image instead of a long text Your audience will appreciate it

You can enter a subtitle here if you need it

7,498,000Big numbers catch your audience’s attention

Venus is the second planet from the Sun

Question and answer

Is Mercury the closest planet to the Sun and also the smallest one in the entire Solar System?

Venus has a beautiful name and is the second planet from the Sun It’s hot and has a poisonous

atmosphere

Topic breakdown

It’s the closest planet to the Sun and the smallest of them all

Venus has a beautiful name and is the second planet from the

Despite being red, Mars is a cold place

It’s full of iron oxide dust

Tablet

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Desktop

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Mercury is the closest planet to the Sun and the smallest planet in

the Solar System

Mercury

Festival head team

Timmy Jimmy

You can speak a bit about this person here

Susan Smith

You can speak a bit about this person here

very cold place

It’s the second planet from the

Mercury is quite a

small planet enormous planetJupiter is an

Saturn is a gas giant and has several rings

Venus is the second planet from the Sun

Follow the link in the graph to modify its data and then paste the new one here For

more info, click here

from the Sun

Follow the link in the graph to modify its data and then paste the new one here For more info, click here

It’s the closest planet to the Sun

Mercury is the closest planet to the Sun and the smallest of them all

It has a beautiful name and is the second closest

planet from the Sun

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