Effect of leachate from bioconvertion of vegetables and fruit waste by Hermetia illucens larvae on the quality content of Brassica rapa var. Narinosa on NFT hydroponics.

• Main Author: Clara Sita ( Nim : 11414038), Natassia
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29559
• Institution: Institut Teknologi Bandung

Hydroponics systems, especially Nutrient Film Technique, are often used as the <br /> <br /> solution of land shortage problem. Hydroponic systems usually use a nutritional <br /> <br /> solution made from inorganic mixture commonly knowed as AB solution. Efforts of <br /> <br /> looking for the alternative solutions of AB are being studied. An example of product <br /> <br /> that can be used is the leachate solution of bioconvertion of vegetables and fruit waste <br /> <br /> by Black Soldier Fly (BSF), Hermetia illucens larvae. The objective of this study was <br /> <br /> to compare between the effects of different concentration of leachate as hydroponic <br /> <br /> nutrition on the quality content of tatsoi, Brassica rapa var. Narinosa, especially <br /> <br /> vitamin C content, fiber content, and consumer perceptions. The treatment of 100% <br /> <br /> mixed AB solution, mixture of AB and leachate, and the leachate ex BSF 100% <br /> <br /> nutrition were used as the NFT nutrient for tatsoi. The results showed that highest <br /> <br /> vitamin C content of B. rapa var. Narinosa’s leaves was found in the 100% leachate <br /> <br /> solution (163,353 mg/100 g), while the highest vitamin C content in stem was found in <br /> <br /> the 60% AB : 40% leachate and 100% leachate solution (35,506 mg/100 g). In addition, <br /> <br /> the highest content of fiber in stem and leaves of tatsoi was found in 60% AB : 40% <br /> <br /> leachate solution with the values of 0,93% and 1,82%. The consumer perception test <br /> <br /> (colour, texture, crispiness, taste, and the visual quality) analyzed by Friedman method <br /> <br /> showed that the consumer tend to like tatsoi with the treatment of 60% AB : 40% <br /> <br /> leachate. It is assumed that the leachate ex BSF solution gives the effect of additional <br /> <br /> nitrogen element on the hydroponic solution that can increase the vitamin C content of <br /> <br /> tatsoi. Based on the research, it is concluded that the composition of 60% AB : 40% <br /> <br /> leachate solution can be used as the alternative nutrition for NFT system to increase <br /> <br /> the production of tatsoi.