46
LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17

LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

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Page 1: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

LECT

URE

10

CERE

ALS

AND C

EREA

L PR

ODUCT

SCH

APT

ER 1

7

Page 2: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

CERE

ALS

Cere

als

are

plan

ts w

hich

yie

ld g

rain

s su

ch a

s wh

eat,

ry

e, r

ice

or c

orn.

Cere

al g

rain

s pr

ovid

e th

e wo

rld

with

a m

ajor

ity

of

its

food

cal

orie

s an

d ab

out

half

of

its

prot

ein.

Thes

e gr

ains

are

con

sum

ed d

irec

tly

or in

mod

ifie

d fo

rm a

s m

ajor

item

s of

die

t (f

lour

, sta

rch,

oil,

bra

n,

suga

r sy

rups

, num

erou

s ad

diti

onal

ingr

edie

nts

that

ar

e us

ed d

urin

g m

anuf

actu

ring

of

othe

r fo

ods)

, and

th

ey a

re f

ed t

o liv

esto

ck a

nd t

here

by c

onve

rted

into

m

eat,

milk

and

egg

s.

Page 3: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

310

92

865

11Ri

ce

321

22

1271

11Ry

e -

çavd

ar

320

62

1263

14Ba

rley

-ar

pa

317

105

1058

13O

ats-

yula

f34

03

213

6911

Whe

at35

22

410

7211

Corn

Kilo

cal

/ 10

0gFi

ber

Fat

Prot

ein

CHO

Moi

stur

eGr

ain

Typi

cal p

erce

ntag

e co

mpo

siti

on o

f ce

real

gra

ins

Page 4: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

CERE

AL

GRA

INS

All

ofth

e ce

real

gra

ins

are

plan

t se

eds

and

they

con

tain

:

Ala

rge

cent

rally

loca

ted

star

chy

endo

sper

m–

rich

in p

rote

in (8

3% o

fke

rnel

)

Prot

ecti

ve o

uter

laye

rs,h

ull a

nd

bran

(15%

of

kern

el) –

fibe

r,ce

llulo

se, v

itam

in B

and

min

eral

s

An

embr

yo o

r ge

rmlo

cate

d ne

ar

the

bott

omof

the

seed

(2%

of

kern

el).

Page 5: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

WHEA

T

Conv

ention

al m

illing

proc

ess

Rece

ival

ofwh

eat

Clea

ning

fro

m f

orei

gn m

atte

r

Cond

itio

ning

(15%

H2O

)48

h

Mill

ing

Sift

ing

thro

ugh

siev

es

Flou

rBr

an

(Sep

erat

ors

+si

eves

)

Sem

olin

a

Stor

ed w

heat

insi

los

(dri

ed t

o13

%wa

ter)

Page 6: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

WHEA

T

Extr

acti

on r

ate

–Th

e pe

rcen

tage

ofor

igin

al w

eigh

tof

whea

t en

teri

ng t

he m

ill t

hat

isre

cove

red

asfl

our.

Rate

60-7

0Ex

tra-

extr

a

70-8

0Ex

tra

80-9

0Fi

rst

clas

s(c

ream

y)

>90

Seco

nd c

lass

(bro

wnis

h)

>95

Who

le-m

ealf

lour

Lowe

r ex

trac

tion

rat

e–

all t

he b

ran

isre

mov

ed.F

lour

be

com

es m

ore

stab

le.

Page 7: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

3013

1,2

0,05

0,08

1,2

12,8

341

70

9619

2,1

0,07

0,29

1,7

13,6

339

85

242

283,

50,

120,

372,

513

,632

810

0

Phyt

ic

acid

*m

g

Ca mg

Niacin,

mg

Ribo

flav

in,

mg

Vit

B 1m

gFa

tg

Prot

ein

gCa

l/10

0gEx

tr.

rate

Com

posi

tion

s of

flo

urs

of d

iffe

rent

ext

ract

ion

rate

s pe

r 10

0g

* Ant

i-nu

tritiona

l fa

ctor

, bi

nds

Ca +

Fe

Page 8: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

BREA

D M

AKI

NG

PRO

CESS

Dou

gh-m

ixin

g D

ough

:

Flou

r10

0 kg

Wat

er65

kg

Bake

r’s y

east

(Sac

char

omyc

es

cere

vise

a ) 2

kg

Salt

2 k

g

Suga

r4

kg

Mec

hani

cal k

nead

ing

Wat

er+f

lour

...Fl

our

enzy

mes

co

nver

t st

arch

to

mal

tose

the

n to

gl

ucos

e.Gl

ucos

eis

used

by

the

yeas

t to

pro

duce

etil

alco

hol a

ndCO

2.M

echa

nica

l act

ion

ofbl

ades

st

retc

hes

the

glut

en f

iber

s.

Page 9: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

BREA

D M

AKI

NG

PRO

CESS

Bulk

fer

men

tati

on25

-35

°C, 2

-4ho

urs,

doug

h vo

lum

e in

crea

ses

as C

O2

ispr

oduc

ed.

Dou

gh d

ivid

ing

and

mou

ldin

gCu

ttin

g in

to p

iece

s an

d ro

lling

into

ba

lls.

Prov

ing

in T

°C

cont

rolle

d co

mpa

rtm

ents

35-3

8 °C

C 6H

12O

6

2 C 2

H5O

H +

2 C

O2

Page 10: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

BREA

D M

AKI

NG

PRO

CESS

Baki

ng25

0-26

0°C,

40-

50m

in.

Cool

ing

Loav

es a

re c

oole

d to

roo

m

tem

pera

ture

Page 11: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Maj

or b

akin

g in

gred

ient

s an

d th

eir

func

tion

s:

Glut

en:W

hen

moi

sten

ed a

nd m

echa

nica

lly w

orke

d, it

form

san

elas

tic

doug

h.

Whe

at s

tarc

h do

esno

t fo

rmel

asti

c fi

lms

asdo

es

glut

en;r

athe

r th

e m

oist

ened

sta

rch,

when

hea

ted,

form

sa

past

e wh

ich

sti

ffen

s an

d g

elat

iniz

es.

Thes

e tw

o co

nsti

tuen

tsof

flou

r to

geth

er a

re

capa

ble

offo

rmin

ga

batt

er o

r do

ugh

depe

ndin

gon

the

amou

ntof

wate

r em

ploy

ed.

Page 12: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Maj

or b

akin

g in

gred

ient

s an

d th

eir

func

tion

s:

Yeas

ts:

Two

form

sof

yeas

t ar

e us

edin

baki

ng-”

moi

st”

pres

sed

cake

s an

d“d

ehyd

rate

d”gr

anul

es.B

oth

form

s co

nsis

tof

billi

ons

ofliv

ing

cells

ofSa

ccha

rom

yces

cer

evis

ea.

Whe

n re

hydr

ated

the

yea

st b

egin

s m

etab

olis

m

and

ferm

enta

tion

.Yea

st f

erm

ents

sim

ple

suga

rs a

nd f

rom

sug

arit

prod

uces

car

bon

diox

ide

and

alco

hol.

Alc

ohol

islo

stat

baki

ng

tem

pera

ture

s an

dCO

2ex

pand

s th

e do

ugh

volu

me

as it

trie

s to

esc

ape

from

the

glu

ten

film

.

Page 13: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Maj

or b

akin

g in

gred

ient

s an

d th

eir

func

tion

s:

LEA

VEN

ED F

OO

DS

“Lea

veni

ng”:

Entr

appi

ng g

asin

asy

stem

,thu

s ex

pand

ing

doug

h vo

lum

e

Yeas

t-ra

ised

goo

ds:B

read

s an

d sw

eet

doug

hs le

aven

ed b

y ca

rbon

di

oxid

e fr

om y

east

fer

men

tati

on

Chem

ical

ly le

aven

ed g

oods

:Cak

es,d

ough

nuts

and

bis

cuit

s ra

ised

by

car

bon

diox

ide

from

bak

ing

powe

rs a

nd c

hem

ical

ag

ents

.(NaH

CO3,

mon

oca

lciu

m p

hosp

hate

)

Air

-leav

ened

goo

ds:A

ngel

cak

es a

nd s

pong

e ca

kes

mad

e wi

thou

t ba

king

pow

der.

Part

ially

leav

ened

goo

ds:P

ie c

rust

s,cr

acke

rs w

here

noin

tent

iona

l le

aven

ing

agen

ts a

re u

sed

yet

asl

ight

leav

enin

g oc

curs

fro

m

expa

ndin

g st

eam

and

oth

er g

ases

dur

ing

the

baki

ng p

roce

ss.

Page 14: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

MA

CARO

NI

PRO

DU

CTIO

N

Mix

ing

the

doug

hSe

mol

ina

Wat

er(3

0%)

Eggs

Tom

ato

past

e,sp

inac

h

Knea

ding

(20

min

)

Dea

erat

ion

vacu

um

Pres

sing

thr

ough

die

s

Dry

ing

(20-

60 °

C, 1

5 h)

(10%

wate

r)

Pack

agin

g

Page 15: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

BULG

UR

PRO

DU

CTIO

N

Clea

ning

whe

at

Parb

oilin

g(7

5°C,

1,5

-2 h

, x2

00%

wate

r)

Dry

ing

(15%

wate

r)

Crus

hing

Siev

es

(coa

rse

for

pila

v,fi

nes

for

mea

t ba

lls)

Pack

agin

g

Page 16: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

TARH

AN

A P

ROD

UCT

ION

Flou

r

Yogh

urt

Pepp

er

Salt

Oni

on

Tom

ato

past

e

Mix

ing

Ferm

enta

tion

(30-

35°C

, 3-4

days

)

Dry

ing

(sol

ar)

Grin

ding

Pack

agin

g

Page 17: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

SOY

MIL

K

Bean

ste

epin

g

Grin

ding

Slur

rywa

ter

Hea

ting

to

inac

tiva

te e

nzym

es(li

poxy

gena

se)

Sepe

rato

rsFi

ber

resi

due

Blen

ding

wit

h in

gred

ient

s

Ster

iliza

tion

Fat

Suga

rVa

nilla

Coco

a fl

avor

sPa

ckag

ing

Page 18: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

MEA

T A

NA

LOGU

ES (F

ig.1

7.13

-15)

Def

atte

dSo

yFl

our

Spec

ial T

reat

men

t*

Extr

usion

Cook

ing

(Hea

t co

agulat

ion

unde

r pr

essu

re)

Mill

ing

Wet

ting

to

30%H

20

Part

ial d

ryin

gSc

reen

ing

TVP

(~55

%Pr

otein)

Text

urized

Ve

geta

ble

Prot

ein(

Chun

ks,

Fine

s,Bi

tes)

*Was

hing

atpH

=4.

5,en

zym

e m

odifi

catio

n,di

solv

ing

in a

lkal

i

Page 19: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

INTRO

DUCT

ION T

O F

OOD S

CIEN

CE A

ND T

ECHNOLO

GY

FRUIT

S-VE

GETABL

ES A

ND

THEI

R PR

ODUCT

S

Page 20: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

COM

POSI

TIO

N

The

com

posi

tion

ofve

geta

bles

and

fru

its

depe

nds

not

only

onbo

tani

cal v

arie

ty,c

ulti

vati

on p

ract

ices

and

we

athe

rbu

tal

soon

the

degr

eeof

mat

urit

y pr

ior

to

harv

est

and

the

cond

itio

nof

ripe

ness

,whi

ch c

onti

nues

af

ter

harv

est

and

isin

flue

nced

by

stor

age

cond

itio

ns.

Mos

t fr

esh

vege

tabl

es a

nd f

ruit

s ar

e hi

ghin

wate

r,lo

win

pro

tein

,and

low

infa

t.Th

e wa

ter

cont

ent

isge

nera

lly

grea

ter

than

70%

and

freq

uent

ly g

reat

er t

han

85%

. Pr

otei

nco

nten

tis

no

grea

ter

than

3,5%

and

fat

cont

ent

nogr

eate

r th

an0,

5%.

Page 21: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Avo

cado

Tre

e fr

uits

Tomat

o, e

gg p

lant

Berr

y fr

uits

Squa

sh,

cucu

mbe

rVi

ne f

ruits

Swe

et c

orn

Cere

alPe

as,

gree

n be

ans

Legu

mes

Fruit

vege

tables

Asp

arag

us

Spr

outs

Cauliflowe

r, a

rticho

kes

Flow

er b

uds

Celery

Pe

tioles

(leaf

sta

lk)

Cabb

age,

spina

ch, lett

uce

Leav

esHer

bage

veg

etab

les

Onion

Bu

lbs

Pota

toes

Tube

rs

Swe

et p

otat

oes,

car

rot

Root

s Ea

rth

vege

tables

Exam

ples

Page 22: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

89,9

0,5

0,5

0,8

8,3

Stra

wber

ry92

,80,

40,

20,

66,

0M

elon

84,0

0,3

0,4

0,3

15,0

App

le87

,10,

50,

20,

911

,3Ora

nge

73,5

0,8

0,4

1,3

24,0

Bana

na94

,80,

90,

21,

32,

8Le

ttuc

e75

,00,

90,

46,

717

,0Pe

as89

,10,

70,

22,

47,

6Gr

een

bean

92,9

0,7

0,2

2,1

4,1

Asp

arag

us93

,70,

90,

11,

14,

2Ra

dish

es88

,61,

00,

21,

19,

1Ca

rrot

s78

1,0

0,1

2,0

18,9

Pota

toes

Wat

erAsh

Fat

Prot

ein

CHO

Food

Typ

ical p

erce

ntag

e co

mpo

sition

of

edib

le p

ortion

of

food

s of

plan

t or

igin.

Page 23: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

QU

ALI

TY O

F FR

UIT

S A

ND

VEG

ETA

BLES

Aff

ecte

d by

:1)

Pre-

harv

est

cond

itio

nBo

tani

cal v

arie

ty o

f fr

uits

and

veg

etab

les

Met

hod

of c

ulti

vati

on-

irri

gati

on f

requ

ency

, soi

l co

mpo

siti

on,c

limat

ic c

ondi

tion

sCl

imat

e an

d we

athe

r co

ndit

ions

at

plan

tati

on a

nd

grow

th2)

Har

vest

con

diti

onD

egre

e of

mat

urit

y at

har

vest

(unr

ipe,

mat

ure-

opti

mum

for

harv

esti

ng, r

ipe-

opti

mum

for

eati

ng, e

arly

sene

scen

ce,s

enes

cenc

e-un

edib

lefo

rm )

Mec

hani

cal o

r ha

nd h

arve

stin

g co

ndit

ion

Page 24: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

QU

ALI

TY O

F FR

UIT

S A

ND

VEG

ETA

BLES

3) P

ost-

harv

est

cond

itio

n

Tran

spor

t co

ndit

ions

Stor

age

cond

itio

ns

Proc

essi

ng c

ondi

tion

s

Page 25: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

QU

ALI

TY L

OSS

1)Ph

ysic

al c

hang

es–

Loss

of t

urgo

r “e

quili

briu

m

moi

stur

e le

vel w

ithi

n ce

lls d

epen

dson

osm

otic

fo

rces

,the

sem

i-per

mea

ble

mem

bran

e al

lows

for

pa

ssag

eof

wate

r” (t

rans

pira

tion

)

Whe

n pl

ant

tiss

ues

are

dam

aged

or

kille

d by

st

orag

e,fr

eezi

ng,c

ooki

ng o

r ot

her

caus

es,

dena

tura

tion

ofth

e pr

otei

nsof

the

cell

mem

bran

es

occu

r,re

sult

ing

inth

e lo

ssof

per

m-s

elec

tivi

ty.

Wat

er a

nd d

isso

lved

sub

stan

ces

are

free

to

diff

use

out

ofth

e ce

lls a

nd le

ave

the

rem

aini

ng

tiss

uein

aso

ft a

nd w

ilted

con

diti

on.

Page 26: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

QU

ALI

TY L

OSS

2)Ch

emic

al C

hang

es:

Vita

min

Cox

idat

ion

Chan

ge f

rom

sta

rch

to s

ugar

s3)

Enzy

mat

ic c

hang

es:

Enzy

mat

ic b

rown

ing

due

to p

olyp

heno

l oxi

dase

Tiss

ue s

ofte

ning

due

to

pect

inas

e en

zym

es.

4)M

icro

biol

ogic

al c

hang

es:

Yeas

ts a

nd m

olds

Ant

imic

robi

al a

gent

sca

n be

used

,Con

trol

led

Atm

osph

ere

stor

age,

Ora

nges

can

easi

lybe

infe

cted

wit

h Pe

nici

llium

di

gita

tum

.

Page 27: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

FRU

ITS

Clim

acte

ric

frui

ts

Cont

inue

rip

enin

g af

ter

harv

esti

ng.

Apr

icot

s

Peac

hes

Bana

na

Tom

atoe

s

Plum

s

Non

-clim

acte

ric

frui

ts

Do

not

ripe

n af

ter

harv

esti

ng.

Grap

es

Cher

ries

Ora

nges

Stra

wber

ries

(No

clim

acte

ric

poin

t)ti

me

Rate

of resp

.

idea

lfor

ea

ting

-cl

imac

teri

c po

int

harv

est

Page 28: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

ORA

NGE

JU

ICE

PRO

DU

CTIO

N

Mec

hani

cal W

ashi

ng

flav

edo

albe

do

core

segm

ents

Yiel

dof

juic

e:

40-5

0%

Sele

ctio

n an

d so

rtin

g

Soil+

dirt

Spoi

lt

frui

ts

Juic

e ex

trac

tion

Solid

wa

stes

Filt

erin

g

Dea

erat

orSi

ngle

str

engt

h ju

ice

12-1

3%dr

y m

atte

r

Conc

entr

atio

n by

eva

pora

ting

(65%

dry

mat

ter)

Page 29: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Past

euri

zati

on

Pack

agin

gA

sept

ic

pack

agin

g Bo

ttle

s,ca

ns,

pape

r-pa

cks

Hea

t tr

eatm

ent:

1)65

°C 3

0min

2)13

5 °C

few

sec.

(HTST)

Page 30: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

POST

-HA

RVES

T PR

ACT

ICES

FO

R VE

GETA

BLES

Rece

ival

ofra

w m

ater

ial

Was

hing

wit

h je

tsof

wate

r

Sort

ing-

sele

ctio

n

Peel

ing,

cutt

ing,

slic

ing

Deh

ydra

tion

Size

grad

ing

Pack

agin

g dr

ied

vege

tabl

es o

r fr

uits

Blan

chin

g(1

00 °

C, 5

min

)

Free

zing

Pack

agin

g fr

ozen

ve

geta

bles

Nex

t sl

ide

Page 31: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Cook

ing

Brin

ing

Dea

erat

ion

Seal

ing

ofca

ns

Reto

rtin

g(~

125

°C, 2

5m

in)

Cool

ing

War

ehou

se p

acki

ng

labe

lling

Cann

ed v

eget

able

s

Gett

ing

rid

ofm

icro

or

gani

sms

Page 32: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

INTRO

DUCT

ION T

O F

OOD S

CIEN

CE A

ND T

ECHNOLO

GY

CHA

PTER

19

CHA

PTER

20

BEVE

RAGE

S A

ND

CO

NFE

CTIO

NER

Y PR

OD

UCT

S

Page 33: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Som

e be

vera

ges

are

cons

umed

for

the

ir f

ood

valu

e(e

.g.m

ilk) y

etot

hers

are

con

sum

ed f

or t

heir

thi

rst-

quen

chin

g pr

oper

ties

,for

the

ir s

tim

ulat

ing

effe

cts,

or s

impl

y be

caus

e co

nsum

ptio

nis

plea

sura

ble.

Carb

onat

ed n

onal

coho

lic b

ever

ages

or

soft

dri

nks

“sod

a po

p”

Carb

onat

ed o

r no

ncar

bona

ted

mild

ly a

lcoh

olic

be

vera

ges

–bee

r,wi

ne

Non

alco

holic

,non

-car

bona

ted

stim

ulat

ing

beve

rage

s-co

ffee

,tea

.

BEVE

RAGE

S

Page 34: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Soft

dri

nk m

anuf

actu

re

Trea

ted

wate

r

Dea

erat

or

Syru

pta

nk

Syru

p pu

mp

Met

erin

g

(Syn

chro

met

er)

Cool

er-

Carb

onat

orCO

2

Can

or b

ottl

e fi

lter

Cont

aine

r cl

osur

e

Page 35: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

BEER

PRO

DU

CTIO

N

Grai

ns:b

arle

y wh

eat

or r

ice

Mal

t bi

nM

ashi

ng

Wat

erFi

lter

ing

Brew

ing

Hop

sH

ops

rem

ovin

gSt

arte

rta

nkYe

ast

Ferm

enta

tion

Yeas

t re

mov

ing

Agi

ng

Page 36: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

BEER

PRO

DU

CTIO

N

Filt

erin

g

Filli

ng

Carb

onat

ion

Can,

bott

le

or

barr

el

Rins

ing

or

clea

ning

Seal

ing

or

crow

ning

Past

euri

zing

Labe

ling

Case

pac

king

Palle

tizi

ngW

areh

ousi

ngM

arke

ting

Page 37: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Mat

urin

gof

grap

e(n

atur

al y

east

Sa

ccha

rom

yces

elli

psoi

deus

)

WIN

E PR

OD

UCT

ION

Crus

hing

ofgr

apes

Filt

erin

g

Ferm

enta

tion

(27°

C 4-

10da

ys)

SO2

trea

tmen

t

Rack

ing

Agi

ng(s

ever

al m

onth

s to

yea

rs)

Clar

ific

atio

n an

d st

abili

zati

on

Page 38: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Hea

t pa

steu

riza

tion

or

col

d pa

steu

riza

tion

Bott

ling

Ifa

wine

is n

otab

ove

17%

alco

hol;

WIN

E PR

OD

UCT

ION

Page 39: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

COFF

EE

Both

tea

and

cof

fee

cont

ain

virt

ually

nofo

od

valu

ein

them

selv

es a

nd a

re c

onsu

med

ent

irel

y fo

r th

eir

refr

eshi

ng a

nd s

tim

ulat

ing

effe

ct.

Blen

ding

bea

ns

Roas

ting

(200

°C 5

min

)

Grin

ding

Brew

ing

Page 40: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Blac

k Te

a

Wit

heri

ng t

he p

luck

ed le

aves

to

soft

en

them

and

par

tial

ly d

ry t

hem

.

Pass

ing

the

with

ered

leav

es u

nder

rol

lers

to

rupt

ure

cell

walls

and

to

rele

ase

the

enzy

mes

and

juic

es

Ferm

enti

ng t

he r

olle

d le

aves

by

expo

sing

th

em t

o ai

r ab

out

27°C

2-5

h.

Dry

ing

the

ferm

ente

d le

aves

inov

ens

atab

out

93°C

. 4%

moi

stur

e,in

acti

vate

s th

e en

zym

es.

Page 41: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

CON

FECT

ION

ERY

AN

D C

HO

COLA

TE

PRO

DU

CTS

Conf

ecti

ons

can

bedi

vide

d in

to t

wo b

road

cat

egor

ies:

Thos

e in

whic

h su

gar

isth

e pr

inci

pal i

ngre

dien

t an

d th

ose

whic

h ar

e ba

sed

onch

ocol

ate.

Suga

r ty

pe c

onfe

ctio

ns in

clud

e:no

ugat

s,fo

ndan

ts,

cara

mel

s,ta

ffee

s an

d je

llies

.

Choc

olat

e ba

sed

conf

ecti

ons:

choc

olat

e-co

vere

d co

nfec

tion

s,ch

ocol

ate-

pann

ed c

onfe

ctio

ns,c

hoco

late

ba

rs,c

hoco

late

-cov

ered

fru

its,

nuts

and

cre

mes

.

Man

y ot

her

ingr

edie

nts

incl

udin

g m

ilk p

rodu

cts,

egg

whit

e,fo

od a

cids

,gum

s,st

arch

es,f

ats,

emul

sifi

ers,

flav

ors,

nuts

,fru

its,

are

used

inca

ndy-

mak

ing.

Page 42: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Ingr

edie

nts

Sucr

ose:

Suga

r fr

om s

ugar

can

e or

bee

t.

Inve

rt s

ugar

: Is

rela

ted

to s

ucro

se a

nd c

omm

onin

conf

ecti

ons.

Sucr

ose

canb

e hy

drol

yzed

by

acid

s or

en

zym

es in

to t

wo m

onos

acch

arid

es g

luco

se a

nd f

ruct

ose.

The

hydr

olyz

ed m

ixtu

reof

fruc

tose

(levu

lose

)and

gl

ucos

e(d

extr

ose)

isca

lled

inve

rt s

ugar

.Can

prev

ent

or

help

con

trol

the

deg

ree

ofsu

cros

e cr

ysta

lliza

tion

.

Corn

syr

ups:

Are

vis

cous

liqu

ids

cont

aini

ng d

extr

ose,

mal

tose

,hig

her

suga

rs a

nd d

extr

ins.

They

are

pro

duce

d by

the

hyd

roly

sis

ofco

rn s

tarc

h us

ing

acid

or

acid

-en

zym

e tr

eatm

ent.

Page 43: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Suga

r su

bsti

tute

s:Th

e ab

ility

of s

ucro

se t

o ca

use

dena

tl c

avit

ies

and

its

calo

ric

cont

ent

have

led

to t

he

use

ofsu

gar

subs

titu

tes

inso

me

conf

ecti

ons.

Bulk

swe

eten

ers

(alc

ohol

der

ivat

ives

ofsu

gars

are

not

ferm

enta

ble

by b

acte

ria

inth

e m

outh

, do

not

cont

ribu

te t

o ca

viti

es, b

ut d

oha

ve c

alor

ic v

alue

sas

sucr

ose,

e.x

.Sor

bito

l,xy

litol

,man

nito

l)

Hig

h-in

tens

ity

swee

tene

rs(c

alor

ic a

nd n

on-c

alor

ic) –

sacc

hari

n,su

cral

ose,

thau

mat

in,a

spar

tam

e,A

cesu

lfam

K, d

o no

tha

ve b

ulki

ng o

r m

outh

feel

ofsu

gar.

Ingr

edie

nts

Page 44: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

CHO

COLA

TE M

AN

UFA

CTU

RIN

G

Ferm

ente

d an

d dr

ied

bean

s

Clea

ning

Roas

ting

Brea

king

and

win

nowi

ng

Nib

-she

ll m

ixtu

res

Nib

Shel

l

Germ

fre

e ni

bge

rm

Page 45: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

CHO

COLA

TE M

AN

UFA

CTU

RIN

G

Mill

ing

Caca

o m

ass

(Cho

cola

te li

quor

)Co

coa

man

ufac

ture

Choc

olat

e m

anuf

actu

re

Page 46: LECTURE 10 CEREALS AND CEREAL PRODUCTSkaraali/Lecture10.pdf · LECTURE 10 CEREALS AND CEREAL PRODUCTS CHAPTER 17. CEREALS Cereals are plants which yield grains such as wheat, rye,

Coco

a m

anuf

actu

reCh

ocol

ate

man

ufac

ture

Alk

aliz

atio

n

Rem

oval

ofex

cess

moi

stur

e

Fat

pres

sing

Pres

s ca

ke

Brea

king

Grin

ding

Sift

ing

Coco

a po

wder

Coco

a bu

tter

Add

itio

nof

suga

r,fl

avor

,milk

and

coc

oa

butt

er

Mix

ing

Refi

ning

Conc

hing

Tem

peri

ng

Mol

ding

Plai

n or

milk

cho

cola

te

Enro

bing

Choc

olat

e co

ated

goo

ds

CHO

COLA

TE M

AN

UFA

CTU

RIN

G