Pengaruh Cara Pengemasan dengan Sistem Atmosfir Termodifikasi pada suhu Penyimpanan Rendah terhadap Mutu Buah Apel CV. Manalagi (Malus sylvestris Mill)

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B u a h - b u a h a n a k a n s a n g a t mudah r u s a k s e t e l a h d i p a n e n a p a b i l a t i d a k d i t a n g a n i s e c a r a t e p a t . S a l a h s a t u c a r a u n t u k m e m p e r t a h a n k a n m u t u d a n m e m p e r p a n j a n g masa s i m p a n k o m o d i t i i n i a d a l a h d e n g a n c a r a m e n g g a b u n g k a n t e k n i k p e n g e m a s a n d e n g a n s i s t e m a t m o s f i r t e r m o d i f i k a s i d a n p e n y i m p a n a n p a d a s u h u r e n d a h .

T u j u a n p e n e l i t i a n i n i a d a l a h u n t u k m e n g a m a t i p e n g a r u h

c a r a p e n g e m a s a n d e n g a n s i s t e m a t m o s f i r t e r m o d i f i k a s i d e n g a n

a t a u t a n p a l e m p e n g a n p e n g i k a t gas e t i l e n p a d a s a t u macam s u h u ( 1 5 ' ~ ) t e r h a d a p m u t u b u a h a p e l c v . M a n a l a g i s e l a m a m a s a p e n y i m p a n a n 3 0 , 60 d a n 9 0 h a r i .

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K e m u d i a n s e t e l a h p e m b e r s i h a n d a n g r a d i n g , d i k l a s i f i k a s i k a n m e n j a d i d u a k e l o m p o k , y a i t u y a n g b e r j u m l a h 9 - 1 0 b i j i / k g d a n 1 1 - 1 5 b i j i / k g . S u h u d a l a m b u a h d i u k u r d e n g a n c a r a memasukkan s e n s o r t e r m o m e t e r " d i g i t a l " d a n s e b e l u m p e n g e m a s a n d i l a k u k a n p r a - p e n d i n g i n a n d e n g a n m e r e n d a m b u a h k e d a l a m a i r e s b e r s u h u 4 - 1 0 OC s e l a m a 10 m e n i t s a m p a i m e n d e k a t i s u h u r u a n g p e n y i m p a n a n ( 1 5 O C ) .

Dari h a s i l p e n e l i t i a n d i k e t a h u i b a h w a k o n d i s i a t m o s f i r d i d a l a m k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m d e n g a n a t a u t a n p a p e l e t p e n g i k a t gas e t i l e n d a p a t m e n u r u n k a n k o n s e n t r a s i g a s o k s i g e n , t e r u t a m a p a d a k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t g a s e t i l e n , d a n m e n i n g k a t k a n k a n d u n g a n k o n s e n t r a s i g a s k a r b o n d i o k s i d a .

K a n d u n g a n k o n s e n t r a s i e t i l e n m e n i n g k a t d a r i a w a l p e n y i m p a n a n s a m p a i h a r i k e 3 0 . P u n c a k k a n d u n g a n k o n s e n t r a s i e t i l e n t e r j a d i p a d a h a r i k e 30 s a m p a i h a r i k e 6 0 , b a i k p a d a k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m d e n g a n p e n g i k a t g a s e t i l e n maupun t a n e a p e n g i k a t g a s e t i l e n , k e m u d i a n d i i k u t i

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d e n g a n p e n u r u n a n s a m p a i a k h i r p e n y i m p a n a n k a r e n a b a n y a k n y a e e m b e n t u k a n g a s k a r b o n d i o k s i d a d a n p e n g a r u h l e m p e n g a n p e n g i k a t g a s e t i l e n .

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9 - 1 0 b i j i / k g (Wcc) m a s i n g - m a s i n g b e r k i s a r a n t a r a 7 . 3 0 - 8 . 6 6 % ,

3 . 3 8 - 3 . 9 2 % d a n 2 9 . 3 2 - 4 4 . 0 0 ppm; k o t a k kayu d e n g a n l i n e r

k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m d a n b e r i s i b u a h 9-10

b i j i / k g (Wc) 8 . 2 0 - 9 . 5 8 2 , 3 . 4 8 - 4 . 0 2 % d a n 3 5 . 1 3 - 4 9 . 8 1 ppm;

k o t a k k a y u d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g

j a r u m p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h 1 1 - 1 5

b i j i / k g (Wdc) 8 . 2 3 - 9 . 6 0 % , 3 . 4 1 - 3 . 9 5 % d a n 4 1 . 1 5 - 5 5 . 8 4 ppm;

k o t a k kayu d e n g a n l i n e r k a n t o n g . " p o l y e t h y l e n e u b e r l u b a n g

j a r u m d a n b e r i s i b u a h 1 1 - 1 5 b i j i / k g (Wd) 7 . 3 7 - 8 . 7 3 % , 3 . 4 4 -

3 . 9 8 % d a n 3 7 . 1 8 - 5 1 . 8 6 ppm; k o t a k k a r t o n d e n g a n l i n e r k a n t o n g

" p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t e t i l e n

d a n b e r i s i b u a h 9-10 b i j i / k g ( F C C ) b e r k i s a r a n t a r a 6 . 9 6 -

8 . 3 3 % , 3 . 7 1 - 4 . 2 5 % d a n 2 5 . 0 4 - 3 9 . 7 3 ppm; k o t a k k a r t o n d e n g a n

l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m d a n b e r i s i b u a h

9 - b i j i / k g ( F a ) 7 . 6 5 - 9 . 0 1 % , 3 . 6 3 - 4 . 1 6 % d a n 3 8 . 7 7 - 5 3 . 4 5

ppm; k o t a k k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h

1 1 - 1 5 b i j i / k g ( F d c ) 6 . 7 7 - 8 . 1 4 % , 3 . 5 4 - 4 . 0 8 % d a n 2 5 . 8 8 - 4 0 . 5 6

ppm; k o t a k k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e "

b e r l u b a n g j a r u m d a n b e r i s i b u a h 1 1 - 1 5 b i j i / k g ( F d ) 6 . 8 2 -

8 . 1 9 % , 3 . 5 5 - 4 . 0 9 % d a n 2 6 . 4 1 - 4 1 . 0 9 ppm; s e d a n g k a n p a d a k o t a k

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2 0 . 4 1 - 2 1 . 7 7 % , k o n s e n t r a s i g a s k a r b o n d i o k s i d a s a m p a i m e n c a p a i

0 . 3 3 % d a n k a n d u n g a n k o n s e n t r a s i g a s e t i l e n s a m p a i m e n c a p a i

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P a d a p e n y i m p a n a n 6 0 h a r i , k o n s e n t r a s i g a s o k s i g e n , g a s

k a r b o n d i o k s i d a d a n k a n d u n g a n k o n s e n t r a s i e t i l e n p a d a kemasan

k o t a k kayu d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g

j a r u m p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h 9 - 1 0

b i j i / k g (Wcc) m a s i n g - m a s i n g b e r k i s a r a n t a r a 6 . 4 1 - 9 . 5 8 % ,

3 . 0 4 - 3 . 5 3 % d a n 8 4 . 6 5 - 1 0 4 . 6 4 ppm, s e d a n g k a n y a n g t a n p a p e l e t

p e n g i k a t e t i l e n (Wc) 9 . 0 6 - 1 0 . 2 3 % , 3 . 1 6 - 3 . 6 5 2 d a n 8 0 . 8 7 -

1 0 0 . 8 5 ppm; k o t a k kayu d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n "

b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h

1 1 - 1 5 b i j i / k g (Wdc) 6 . 2 8 - 9 . 4 6 % , 3 . 3 3 - 3 . 8 2 2 d a n 9 5 . 0 1 - 1 1 5 . 0 0

ppm, s e d a n g k a n t a n p a p e l e t p e n g i k a t e t i l e n (Wd) 7 . 9 7 - 9 . 1 4 % ,

3 . 2 3 - 3 . 7 2 2 d a n 8 9 . 3 9 - 1 0 9 . 3 8 ppm; k o t a k k a r t o n d e n g a n l i n e r

k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t

e t i l e n d a n b e r i s i b u a h 9 - 1 0 b i j i / k g ( F C C ) 7 . 0 5 - 8 . 2 2 % , 3 . 6 0 -

4 . 0 9 % d a n 8 8 . 5 6 - 1 0 8 . 5 5 ppm, s e d a n g k a n t a n p a p e l e t p e n g i k a t

e t i l e n ( F c ) 9 . 6 1 - 1 0 . 7 8 % , 3 . 4 6 - 4 . 9 5 % d a n 1 0 2 . 8 2 - 1 2 2 . 8 1 ppm;

k o t a k k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g

b i j i / k g ( F d c ) 6 . 5 0 - 7 . 6 7 % , 3 . 3 4 - 3 . 8 3 % d a n 1 0 0 . 2 2 - 1 2 0 . 2 0 ppm,

s e d a n g k a n y a n g t a n p a p e l e t p e n g i k a t e t i l e n ( F d ) 7 . 3 5 - 8 . 5 2 2 ,

3 . 4 9 - 3 . 9 8 % d a n 9 9 . 8 2 - 1 1 9 . 8 i . ppm; s e d a n g k a n p a d a kemasan

k o n t r o l k o n s e n t r a s i g a s o k s i g e n b e r k i s a r a n t a r a 2 0 . 4 4 -

2 1 . 6 1 % , k o n s e n t r a s i g a s k a r b o n d i o k s i d a s a m p a i m e n c a p a i 0 . 3 2 %

d a n k a n d u n g a n k o n s e n t r a s i g a s e t i l e n s a m p a i m e n c a p a i 1 0 . 1 2

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k a r b o n d i o k s i d a d a n k a n d u n g a n k o n s e n t r a s i g a s e t i l e n p a d a

kemasan k o t a k kayu d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e "

p e n g i k a t e t i l e n (Wc) 8 . 5 8 - 8 . 8 4 % , 3 . 8 8 - 4 . 3 8 % d a n 8 7 . 7 0 - 1 0 2 . 1 3

ppm; k o t a k kayu d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e "

1 1 - 1 5 b i j i / k g (Wdc) 8 . 0 3 - 8 . 8 4 % , 4 . 1 9 - 4 . 6 9 % d a n 8 9 . 4 9 - 1 0 3 . 9 2

ppm, s e d a n g k a n t a n p a p e l e t p e n g i k a t ' e t i l e n (Wd) 7 . 7 6 - 8 . 5 7 % ,

3 . 9 7 - 4 . 4 7 % d a n 9 2 . 1 3 - 1 0 6 . 5 6 ppm; k o t a k k a r t o n d e n g a n l i n e r

e t i l e n d a n b e r i s i b u a h 9-10 b i j i / k g ( F C C ) 6 . 7 8 - 7 . 5 9 % , 4 . 9 5 -

5 . 4 5 % d a n 8 4 . 3 9 - 9 8 . 8 2 ppm, s e d a n g k a n t a n p a p e l e t p e n g i k a t

e t i l e n ( F c ) 9 . 0 4 - 9 . 8 4 % , 4 . 1 9 - 4 . 6 9 % d a n 1 0 0 . 3 3 - 1 1 4 . 7 5 ppm;

b i j i / k g ( F d c ) 6 . 3 0 - 7 . 1 0 % , 4 . 2 7 - 4 . 7 7 2 d a n 1 0 2 . 0 5 - 1 1 6 . 4 6 ppm,

s e d a n g k a n t a n p a p e l e t p e n g i k a t e t i l e n ( F d ) 7 . 2 7 - 8 . 0 7 2 , 4 . 3 1 -

4 . 8 1 % d a n 1 0 4 . 7 1 - 1 1 9 . 1 3 ppm; s e d a n g k a n p a d a kemasan k o n t r o l

( K )

k o n s e n t r a s i g a s o k s i g e n b e r k i s a r a n t a r a 2 0 . 5 9 - 2 1 . 4 0 % ,

k o n s e n t r a s i g a s k a r b o n d i o k s i d a s a m p a i m e n c a p a i 0 . 3 4 % d a n

k a n d u n g a n k o n s e n t r a s i g a s e t i l e n s a m p a i m e n c a p a i 7 . 3 3 ppm.

S e t e l a h p e n y i m p a n a n 3 0 h a r i , b u a h a p e 1 y a n g d i k e m a s

d a l a m kemasan k o t a k k a y u d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e "

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k e r u s a k a n b u a h t e r e n d a h y a i t u 0 . 8 6 % , d i i k u t i d e n g a n b u a h

a p e 1 d a l a m k e m a s a n k o t a k k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m d a n b e r i s i b u a h 11-15 b i j i / k g

( F d ) s e b e s a r 1 . 2 0 % , k e m a s a n k o t a k k a y u d e n g a n l i n e r k a n t o n g

d a n b e r i s i b u a h 11-15 b i j i / k g (Wdc) 1 . 2 4 % , k e m a s a n k o t a k

k a y u d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m

p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h 9 - 1 0 b i j i / k g

( W c c ) 1 . 4 4 % , k e m a s a n k o t a k k a r t o n d e n g a n l i n e r k a n t o n g

" p o l y e t h y l e n e " b e r l u b a n g j a r u m d a n b e r i s i b u a h 9 - 1 0 b i j i / k g

( F c ) 2 . 2 1 % , k e m a s a n k o t a k k a y u d e n g a n l i n e r k a n t o n g

" p o l y e t h y l e n e " b e r l u b a n g j a r u m d a n b e r i s i b u a h 1 1 - 1 5 b i j i / k g

(Wd) 3 . 0 7 % , k e m a s a n k o t a k k a r t o n d e n g a n l i n e r k a n t o n g

d a n b e r i s i b u a h 9 - 1 0 b i j i / k g ( F C C ) 4 . 1 7 % , k e m a s a n k o t a k

k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m

p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h 1 1 - 1 5 b i j i / k g

( F d c ) 4 . 3 0 % , d a n d a l a m k e m a s a n k o n t r o l k a r t o n s e b e s a r 1 . 6 7 % ,

s e d a n g k a n s e t e l a h p e n y i m p a n a n 6 0 d a n 9 0 h a r i k e r u s a k a n

t e r e n d a h d i c a p a i o l e h k e m a s a n k o t a k k a r t o n d e n g a n l i n e r

k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r i m p l u s p e l e t p e n g i k a t

e t i l e n d a n b e r i s i b u a h 9 - 1 0 b i j i / k g ( F C C ) d a n y a n g b e r i s i

b u a h 11-15 b i j i / k g ( F d c ) m a s i n g - m a s i n g s e b e s a r 5 0 . 3 9 % d a n

7 1 . 6 8 % . :

J e n i s k e m a s a n t i d a k m e n y e b a b k a n p e r b e d a a n y a n g n y a t a

t e r h a d a p k a d a r a i r b a s i s b a s a h , k e k e r a s a n b u a h ( p o s i s i b u a h

t e g a k ) s e t e l a h p b n y i m p a n a n 3 0 , 6 0 d a n 9 0 h a r i , k e m u d i a n

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t o t a l a s a m (mg asam m a l a t / l 0 0 g b a h a n ) d a n v i t a m i n C (mg asam a s k o r b a t / l 0 0 g b a h a n ) s e t e l a h p e n y i m p a n a n 6 0 d a n 9 0 h a r j d a n t o t a l p a d a t a n t e r l a r u t s e t e l a h p e n y i m p a n a n 30 d a n 60

h a r i

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P a d a p e n y i m p a n a n 30 h a r i , k a d a r v i t a m i n C t e r t i n g g i d a n t o t a l asam t e r e n d a h b u a h a p e l d i a n t a r a k e m a s a n k o t a k

k a y u d i c a p a i o l e h k e m a s a n Wd m a s i n g - m a s i n g s e b e s a r 1 6 0 . 5 3 mg

asam a s k o r b a t / l 0 0 g b a h a n d a n 2 0 4 . 2 6 mg asam m a l a t / 1 0 0 g

b a h a n

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s e d a n g k a n d i a n t a r a k e m a s a n k a r t o n m a s i n g - m a s i n g

d i c a p a i o l e h k e m a s a n F c s e b e s a r 1 9 6 . 9 9 mg asam a s k o r b a t / l 0 0

g b a h a n d a n k e m a s a n Fd s e b e s a r 1 1 8 . 6 2 mg asam m a l a t / l 0 0 g

b a h a n

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P a d a p e n y i m p a n a n 3 0 , 6 0 d a n 90 h a r i , k e k e r a s a n ( m m / 9 7 . 5 g 10 d e t i k ) b u a h a p e 1 ( p o s i s i b u a h m e n d a t a r / m i r i n g ) d a l a m k e m a s a n k o t a k k a y u d e n g a n l i n e r

e t i l e n d a n b e r i s i b u u h 9 - 1 0 b i j i / k g ( W c c ) m a s i n g - m a s i n g

b e r k i s a r a n t a r a 2 2 . 6 4 - 3 0 . 6 6 m m , 2 6 . 0 2 - 3 0 . 9 1 m m d a n 2 6 . 9 6 - 3 1 . 5 2 m m , s e d a n g k a n y a n g t a n p a p e l e t p e n g i k a t e t i l e n (Wc)

2 6 . 7 4 - 3 4 . 7 6 m m , 3 0 . 5 3 - 3 5 . 4 2 m m d a n 3 1 . 5 7 - 3 6 . 1 3 mm; k o t a k k a y u d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m

p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h 11-15 b i j i / k g

( W d c ) 2 0 . 5 9 - 2 8 . 6 1 m m , 2 3 . 8 1 - 2 8 . 6 9 mm d a n 2 4 . 5 5 - 2 9 . 1 1 mm,

s e d a n g k a n t a n p a p e l e t p e n g i k a t e t i l e n (Wd) 1 8 . 7 4 - 2 6 . 7 6 m m ,

2 2 . 5 4 - 2 7 . 4 2 m m d a n 2 3 . 4 9 - 2 8 . 0 5 mm; k o t a k k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t

e t i l e n d a n b e r i s i b u a h 9 - 1 0 g i j i / k g ( F C C ) 1 7 . 5 4 - 2 5 . 5 6 m m ,

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20.78-25.67 mm d a n 21.95-26.51 mm, s e d a n g k a n t a n p a p e l e t p e n g i k a t e t i l e n ( F c ) 18.69-26.71 m m , 23.88-28.77 m m d a n

27.35-31.91 m m ; k o t a k k a r t o n d e n g a n l i n e r k a n t o n g " p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t e t i l e n d a n b e r i s i b u a h 11-15 b i j i / k g ( F d c ) 17.09-25.11 mm, 20.50- 25.38 mm d a n 21.94-26.50 mm, s e d a n g k a n t a n p a p e l e t p e n g i k a t

e t i l e n ( F d ) 15.09-23.11 mm, 18.07-22.96 mm d a n 20.95-25.51

m m ; s e d a n g k a n k e k e r a s a n d a l a m k e m a s a n k o n t r o l k a r t o n ( K )

m a s i n g - m a s i n g b e r k i s a r a n t a r a 19.16-27.19 mm, 22.07-26.96 mm d a n 23.25-27.82 mm/97.5 g/l0 d e t i k .

B e r d a s a r k a n h a s i l p e n e l i t i a n t e r h a d a p k e r u s a k a n b u a h , t i d a k d i s a r a n k a n m e n g g u n a k a n k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m d e n g a n a t a u t a n p a p e l e t p e n g i k a t g a s e t i l e n l e b i h d a r i 30 h a r i . U n t u k m e n g a m a t i j u m l a h b u a h y a n g r u s a k s e l a m a p e n y i m p a n a n 30 s a m p a i 90 h a r i d i s a r a n k a n a g a r m e l a k u k a n p e n g a m a t a n d a l a m s e l a n g w a k t u y a n g l e b i h p e n d e k .

P a d a p e n y i m p a n a n 30 h a r i , g a s e t i l e n y a n g d i h a s i l k a n o l e h a p e l c v . M a n a l a g i d a p a t m e n c a p a i 41.75-55.84 ppm, s e d a n g k a n p a d a p e n y i m p a n a n 60 d a n 90 h a r i m e n c a p a i 102.82- 122.81 ppm d a n 104.71-119.13 p p m . K o n s e n t r a s i g a s e t i l e n t i n g g i t e r s e b u t d a p a t d i m a n f a a t k a n u n t u k m e r a n g s a n g d a n memacu p r o s e s p e m a t a n g a n k o m o d i t a s b u a h - b u a h a n l a i n n y a , s e p e r t i p i s a n g d a n m a n g g a , y a i t u d e n g a n c a r a m e n y i m p a n b u a h a p e l b e r s a m a - s a m a d e n g a n k o m o d i t a s b u a h - b u a h a n l a i n n y a d a l a m

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A s e p Haemun. F 2 5 . 1 3 7 7 . P e n g a r u h Cara P e n g e m a s a n d e n g a n S i s t e m A t m o s f i r T e r m o d i f i k a s i p a d a S u h u P e n y i m p a n a n R e n d a h t e r h a d a p Mutu B u a h A p e 1 c v . M a n a l a g i (k,bi

M i l l ) . ( D i b a w a h b i m b i n g a n D r . I r . H a d i K P u r w a d a r i a d a n

D r . S j a i f u l l a h , M S G ) .

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B u a h - b u a h a n a k a n s a n g a t mudah r u s a k s e t e l a h d i p a n e n a p a b i l a t i d a k d i t a n g a n i s e c a r a t e p a t . S a l a h s a t u c a r a u n t u k m e m p e r t a h a n k a n m u t u d a n m e m p e r p a n j a n g masa s i m p a n k o m o d i t i i n i a d a l a h d e n g a n c a r a m e n g g a b u n g k a n t e k n i k p e n g e m a s a n d e n g a n s i s t e m a t m o s f i r t e r m o d i f i k a s i d a n p e n y i m p a n a n p a d a s u h u r e n d a h .

T u j u a n p e n e l i t i a n i n i a d a l a h u n t u k m e n g a m a t i p e n g a r u h

c a r a p e n g e m a s a n d e n g a n s i s t e m a t m o s f i r t e r m o d i f i k a s i d e n g a n

a t a u t a n p a l e m p e n g a n p e n g i k a t gas e t i l e n p a d a s a t u macam s u h u ( 1 5 ' ~ ) t e r h a d a p m u t u b u a h a p e l c v . M a n a l a g i s e l a m a m a s a p e n y i m p a n a n 3 0 , 60 d a n 9 0 h a r i .

(165)

B u a h a p e 1 p a d a s t a d i a m a s i h h i j a u d i p e t i k d a n d i k u m p u l k a n

.

K e m u d i a n s e t e l a h p e m b e r s i h a n d a n g r a d i n g , d i k l a s i f i k a s i k a n m e n j a d i d u a k e l o m p o k , y a i t u y a n g b e r j u m l a h 9 - 1 0 b i j i / k g d a n 1 1 - 1 5 b i j i / k g . S u h u d a l a m b u a h d i u k u r d e n g a n c a r a memasukkan s e n s o r t e r m o m e t e r " d i g i t a l " d a n s e b e l u m p e n g e m a s a n d i l a k u k a n p r a - p e n d i n g i n a n d e n g a n m e r e n d a m b u a h k e d a l a m a i r e s b e r s u h u 4 - 1 0 OC s e l a m a 10 m e n i t s a m p a i m e n d e k a t i s u h u r u a n g p e n y i m p a n a n ( 1 5 O C ) .

Dari h a s i l p e n e l i t i a n d i k e t a h u i b a h w a k o n d i s i a t m o s f i r d i d a l a m k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m d e n g a n a t a u t a n p a p e l e t p e n g i k a t gas e t i l e n d a p a t m e n u r u n k a n k o n s e n t r a s i g a s o k s i g e n , t e r u t a m a p a d a k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m p l u s p e l e t p e n g i k a t g a s e t i l e n , d a n m e n i n g k a t k a n k a n d u n g a n k o n s e n t r a s i g a s k a r b o n d i o k s i d a .

K a n d u n g a n k o n s e n t r a s i e t i l e n m e n i n g k a t d a r i a w a l p e n y i m p a n a n s a m p a i h a r i k e 3 0 . P u n c a k k a n d u n g a n k o n s e n t r a s i e t i l e n t e r j a d i p a d a h a r i k e 30 s a m p a i h a r i k e 6 0 , b a i k p a d a k e m a s a n " p o l y e t h y l e n e " b e r l u b a n g j a r u m d e n g a n p e n g i k a t g a s e t i l e n maupun t a n e a p e n g i k a t g a s e t i l e n , k e m u d i a n d i i k u t i

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d e n g a n p e n u r u n a n s a m p a i a k h i r p e n y i m p a n a n k a r e n a b a n y a k n y a e e m b e n t u k a n g a s k a r b o n d i o k s i d a d a n p e n g a r u h l e m p e n g a n p e n g i k a t g a s e t i l e n .

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