Seminario de Procesos IV- Cereales

8/8/2019 Seminario de Procesos IV- Cereales

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DEHULLING OFCORIANDER

FRUIT BEFOREOIL EXTRACTION

INTEGRANTES: ANGELICA MARIA HERNANDEZ

PATERNINA JULIETH MELISSA ORTEGA

ARRIETA YERLIS TORRES HERNANDEZ



ABSTRACTCoriander, popularly known as coriander or Chinese

parsley Dania, is an annual herb of the familyApiaceae (formerly called Umbelliferae).

It is grown in summer

he essential oil is obtained by steam distillationfrom the fruit crushed and the residue was used forhuman or further processed to reco!er the

triglyceride feed.

his study e!aluated the feasibility of corianderfruits shelling as part of the preparation of seeds

before oil e"traction and de!eloped a simpleprocess for the shelling of cilantro



he fruit of coriander with #$.%& oil and #'& moistureseparating rst akes fruit using a shelling impact or aroll mill.

he shells were remo!ed by screening, aspiration, or theuse of a gra!ity separator

*helled seeds with purity+ -& was achie!able.

*helling coriander fruit reduced the weight by -'& andreduced the !olume by %'&.

he shelling also doubled cilantro oil content increasedcrude protein $'&, crude ber decreased by /&, andreduced other carbohydrates by %-&.

he pre0press and sol!ent e"traction would be moreappropriate for pure shelled seeds due to their high oilcontent



INTRODUCTION

Coriander (Coriandrum sati!um 1.) is an annual crop of herbstraditionally grown for use as a fresh green grass (cilantro) oras a spice.

Cilantro is grown in most agricultural areas, e"cept in the

tropics and polar regions.

he main producers are 2ussia, Ukraine, 3ungary, 4oland,Canada, India, 4akistan, urkey, 5uatemala, 6e"ico andArgentina (Diederichsen., #%7 1ope8 et al, ''/).

he fruit contains '.9 to #.& essential oil, which is %'0$'&linalool, the compound that gi!es the pleasant characteristicodor

*helling typically in!ol!es two operations



MATERIALS

AND

METHODS



ORIANDER FRUIT DEHULLIN

he huller used in this study was a :orsbergImpact 3uller 6odel #-0D



he milled coriander was then screened using a 2o0 ap sie!e shaker (6odel 2; , <.*. yler, 6entor,=3, U*A) and standard testing sie!es (able #).

RO-TAP SIEVE SHAKER MODEL RX 29 STANDARD TESTING SIEVES



he dehulling was scaled0up to >-.> kg andprocessed as illustrated in :ig. .



OIL EXTRACTION

=il from coriander fruit and dehulled seeds withdi?erent hull contents were e"tracted using atubular radial screw press (*cott ech @2II%',inhedo0*4, Bra8il) dri!en by a . k< gear motor

Before pressing, the coriander fruit and dehulledseeds were heated to /- C using a uidi8ed beddryer

he air heater was set at #'' C and the air owrate was increased slowly until the bed ust startedto uidi8e. he heated seeds were pressedimmediately once the target seed temperature

was reached.



ANALYTICAL METHODS

he dimensions of -' randomly selectedwhole coriander fruits were measuredusing a digital caliper.



he oil contents of coriander fruit, dehulledseed and other fractions, and press cakes

were determined using a pulsed E62spectrometer

PULSED NMR

SPECTROMETER



he ::A (e"pressed as oleic) in the crude oil wasdetermined using a 6ethrohm $' *6 itrino

METHROHM 702 SM TITRINO



he color of the crude oil was measured onthe 1o!ibond 4:;- intometer

LOVIBOND PFX99 TINTOMETER



STATISTICAL ANALYSES

*tatistical analyses were performed usingthe *A*F *ystems for <indows software



RESULTS

AND

DISCUSSIO



SEED CHARACTERISTICS

he coriander

used in this studyhad oil content of#$.% G '.#& and.$ G '.'&moisture content.



LABORATORY DEHULLING

he laboratory dehullingwas done to determinethe appropriateoperating speed of theimpeller of the impacthuller and to select themesh si8e of the screensneeded to partition theseeds and hulls.



<hole dehulled seeds and pure hulls hand0pickedfrom the impact0milled coriander had oil contents of9.$9& and '.9&, respecti!ely. Using these !alues,

a plot (:ig. >) of & oil content !s. & seed contentwas made to estimate the purity of the fractions



PILOT-SCALE DEHULLING

he rst pass through the impact huller generated%-& H#' 6 fraction and -& #/ 6 fraction (able 9).



he di!iders at the discharge edge of the tableseparated the density0graded dehulled seeds intohea!y, medium, and light (hulls #) fractions. he

material carried by the air to the cyclone is referred toas hulls . As shown in able >



@!en without optimi8ing the hull separation,combining fractions with oil contents greater than#'& will yield -'& dehulled seeds with 9'& oilcontent (able -).



4ro"imate composition analysis of whole anddehulled coriander seeds are shown in able %.



OIL EXTRACTION BY

SCRE! PRESSING

6illed coriander fruit and dehulled seeds

with di?erent oil contents, and thus,di?erent amounts of hulls, were screw0pressed to e!aluate their pressingcharacteristics. As shown in able $,



CONCLUSIONCilantro fruit can easily kill the rst di!ision of thefruit and seed loosening of helmets by a hullerimpact or a roll mill

he peeled fruit and coriander seeds with up to-& purity were susceptible screw, and fa!orable

results were obtained e!en by using a laboratoryscrew press.



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Seminario de Procesos IV- Cereales

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