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食品化学 Food Chemistry PowerPoint PPT Presentation


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食品化学 Food Chemistry. 西南大学 Southwest University. 第一章 绪论. 什么是食品化学 食品化学的历史 食化学的分类 现代食品化学的发展方向 参考文献. 1 什么是食品化学. 食品:经特定方式加工后供人类食用的食物。 食物:可供人类食用的物质原料统称为食物。 化学:研究物质组成、性质及其功能和变化的科学,包括分析化学、有机化学、物理与胶体化学、分离化学、普通化学和生物化学等。

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食品化学 Food Chemistry

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Food chemistry

Food Chemistry

Southwest University


Food chemistry


Food chemistry

1


Food chemistry

2


Food chemistry

3


Food chemistry

4


Food chemistry

5

  • OR 2003

  • 1992

  • Food Chemistry

  • Journal Agricultural and Food Chemistry


Food chemistry


Food chemistry

1


Food chemistry

  • ---

  • ---------

  • ------

  • ---------


Food chemistry


Food chemistry

2

  • 045

  • 9%


Food chemistry

3

  • 0.1m

  • -40

  • aw/m(1-aw)=1/m1c+(c-1)aw/m1caw -m-m1c-


Food chemistry

4


Food chemistry

5


Food chemistry

  • aw=P/P0,aw=ERH/100


Food chemistry

  • -lnaw=-H/RT+c T-R-H-


Food chemistry

  • aw=P/P0P0P0aw=P/P0


Food chemistry

  • -150.80200.80


Food chemistry

6


Food chemistry

  • aw>0.9aw>0.87aw>0.8


Food chemistry

  • 0.850.30.1


Food chemistry

  • 0.40.8

  • Maillard0.7


Food chemistry

7


Food chemistry


Food chemistry


Food chemistry

  • Iaw=0~0.250~0.07g/gA

  • II aw=0.25~0.800.07~0.32g/g

  • III aw=0.80~0.990.40g/g


Food chemistry

  • SJ


Food chemistry


Food chemistry


Food chemistry

  • aw/(m(1-aw))=1/(m1c)+(c-1)aw/(m1c)

  • aw/(1-aw)aw1/(m1c)(c-1)/(m1c)


Food chemistry

  • molecular mobilityMm


Food chemistry


Food chemistry


Food chemistry

1


Food chemistry

  • 80%


Food chemistry

  • -----

  • -----

  • -----

  • -----


Food chemistry


Food chemistry

2


Food chemistry

  • 1.01.50.70.60.50.4


Food chemistry

  • 78.94%374.78g/100g66.60%199.4g/100g46.71%87.67g/100g

  • 5570%


Food chemistry

  • >>

  • 30%-40% 123


Food chemistry

  • >>


Food chemistry

  • 50%65%80%


Food chemistry

  • >>


Food chemistry


Food chemistry

  • <<


Food chemistry

3


Food chemistry

  • C12H22O11H2O C6H12O6C6H12O6

    H\

  • --


Food chemistry


Food chemistry

  • 2C6H12O6C12H22O12H2O>>5% 10.15%35Be23

  • 5-


Food chemistry

4


Food chemistry


Food chemistry

  • ------

  • -----6

  • --- 65m20m15m16m5m


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • ---


Food chemistry


Food chemistry

  • ----

  • --

  • -14-16

  • >>


Food chemistry

  • --

  • --

  • -:-14-16-16-14-14-

  • --14-16-16-14---

  • -14-16-13


Food chemistry

  • -

  • -


Food chemistry

  • ABCDpH4-7pH10.0


Food chemistry

  • A B 30%-60%10%C 2-460-20D

  • 8010%


Food chemistry


Food chemistry


Food chemistry

  • -14-

  • =/


Food chemistry

  • 3

  • 60-65%pH2.0-3.50.3%-0.7%


Food chemistry

  • 30-5050-70DE50

  • pHpH2.7-3.5pH3.2pH2.5-6.5


Food chemistry


Food chemistry

1

  • -----

  • -----

  • -----

  • -----


Food chemistry

2


Food chemistry


Food chemistry

  • -


Food chemistry

  • pH pI

    pH<pI pH=pI pH>pI

  • =0.5CiZi2


Food chemistry

  • pH6.6-

  • pH7-

  • 70%

  • pH2pH12


Food chemistry


Food chemistry

  • pH


Food chemistry


Food chemistry


Food chemistry

  • -

  • pHpIpI

  • 0.5-1.0mol/L


Food chemistry

  • Ca2+

  • 2-8%


Food chemistry


Food chemistry

3


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • 100100


Food chemistry


Food chemistry


Food chemistry

1


Food chemistry

  • -----

  • -----

  • -----

  • -----130100-130100

  • -----


Food chemistry


Food chemistry

2


Food chemistry


Food chemistry

  • 3-4XDCL--2TCL--3


Food chemistry


Food chemistry

  • -2TCL


Food chemistry

  • 1-5 <<

  • --->>>>


Food chemistry

  • 240

  • 340

  • 5370


Food chemistry

  • 5


Food chemistry


Food chemistry

3

  • -----

  • -----

  • -----


Food chemistry

  • 10kGy-50kGy

  • 1kGy-10kGy

  • 1kGy


Food chemistry


Food chemistry

  • RH + Mx+R+H++M(x-1)+

  • R+3O2ROO

    ROO+RHROOH+R

  • ROO+ROOROOR+O2

    ROO+RROORR+RR-R


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • +h*

  • *+3O2+1O2

  • +1O2


Food chemistry

  • V1500V


Food chemistry

  • 14---8

  • -8


Food chemistry

  • /


Food chemistry


Food chemistry

  • =4020101

  • Sn-1Sn-2Sn-3


Food chemistry

  • 21-63161


Food chemistry

  • CaFeMnCoC-H Pb>Cu>Se>Zn>Fe>Al>Ag

  • VcVE


Food chemistry

  • 1

  • 2

  • 3A B BHABHTC VcEDTA

  • 4VE-

  • 5


Food chemistry

3


Food chemistry


Food chemistry

  • SRS2.32.3

  • NaKNa-KNaOH


Food chemistry


Food chemistry

  • 1gKOHmg5

  • 1gKOHmg200

  • 100gI2g

  • 1gKOHmg


Food chemistry

  • KII2Na2S2O3I2kg

  • 97.82.33ml/s10020

  • Schaal60


Food chemistry


Food chemistry

1


Food chemistry


Food chemistry


Food chemistry


Food chemistry

nm

400

425

450

490

510

530

550

590

640

730


Food chemistry

(Chromophore )

(200~800nm,

-N=N-, -N=O, C=S, C=C , C=O.

2.( Auxochrome)

-OH, -OR, -NH2, -NHR, -NR2, -SR, -Cl, -Br


Food chemistry

2


Food chemistry

  • -


Food chemistry

  • aba:b=3:1

  • MgCuFeZn

  • pH


Food chemistry


Food chemistry

-

-Mg2+/ -Mg2+/

-COCH3-COCH3


Food chemistry

  • 6800017000


Food chemistry


Food chemistry


Food chemistry

  • NO(NOMb)(Nitrosylhemochrome)

    Mb+No(NOHNO2) NOMb(,) NoMb(,)


Food chemistry

  • VAVA-


Food chemistry

  • 2-

  • 2-


Food chemistry

  • pH


Food chemistry

pH

  • OpH

  • pH<3.0pH8.5pH11


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry

3


Food chemistry


Food chemistry


Food chemistry

  • Maillard


Maillard

Maillard

  • Maillard3


Schiff n

SchiffN-


N amadori

N-Amadori


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • 9%C24H36O18138

  • pH3.0-6.9


Food chemistry

  • 23-


Food chemistry


Food chemistry

  • >>>2


Food chemistry

  • 90-95

  • pH6-7pH<3.0VCpH

  • SO2Na2SO3pH=610mg/kgSO2300mg/kg20mg/kg


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • 40-15010-141


Food chemistry


Food chemistry

  • 0.1%0.05%0.0025%0.0001%


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • 10-4030

  • 250.1%0.05%0.0025%0.0001%

  • 00.4%0.25%0.003%0.0003%


Food chemistry

  • 0.25 0.24-0.25 0.28

  • 0.01 0.006-0.007 0.016

  • 0.49 0.72-0.76 0.79

  • 0.00029 0.0002 0.00005


Food chemistry


Food chemistry

  • 10%0.15%


Food chemistry

  • 50100

  • I+G


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • =/1


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry


Food chemistry

  • >>

  • :

  • LD508.7g/kg408.7g/kg


Food chemistry

  • -


Food chemistry

  • [a]Maillard


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