QUANTIFICATION OF CRUDE FIBER CONTENT AND COMPOSITION OF HEMICELLULOSE, CELLULOSE, LIGNIN IN LETTUCE (LACTUCA SATIVA L.) CULTIVATED WITH THE ADDITION OF VERMICOMPOST
Lettuce (Lactuca sativa L.) is a vegetable product that is rich in fiber which is good for the health of the digestive system. Crude fiber is composed of the main components, namely hemicellulose, cellulose, and lignin. Fiber is one of the most important proximate content in assessing the quality...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/82132 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Lettuce (Lactuca sativa L.) is a vegetable product that is rich in fiber which is good
for the health of the digestive system. Crude fiber is composed of the main
components, namely hemicellulose, cellulose, and lignin. Fiber is one of the most
important proximate content in assessing the quality of vegetable products. This
research aims to quantify and create a mathematical model of the crude fiber,
hemicellulose, cellulose and lignin content in lettuce plants cultivated with the
addition of vermicompost. In this research, vermicompost derived from from
guinea pig (Cavia porcellus) waste and household waste was used to provide
nutrients for plants. The quantification results showed that at 35 DAP, crude fiber
content (0.45 g/g DW) and cellulose composition (26.19% or 2.94 g/g DW) were
the highest, whereas hemicellulose composition (13.16% or 1.47 g/g DW) and
lignin composition (9.39% or 1.06 g/g DW) were low. Based on the results of
mathematical modeling, it was found that the crude fiber content and cellulose
composition had a similar patterns of accumulation as described by the Gompertz
model. Both describe a pattern of fiber development involving three main stages,
namely the initiation stage (0 – 25 DAP), the elongation stage (25 – 30 DAP), and
the specialization stage (30 – 42 DAP). The composition of hemicellulose and
lignin described by the Logistic model has a pattern that continues to increase and
has not yet reached a stagnant phase, due to the ongoing process of cell wall
elongation and thickening. With these mathematical model, it can be estimated that
35 DAP is the most appropriate harvest time for lettuce (Lactuca sativa L.) because
it has the best crude fiber and cellulose content |
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