Evaluating the Potential of Liquid Smoke in Protecting Cocoa Beans against Storage Pest

Abstract

Insect attack of produce in storage is a major challenge in postharvest handling and contributes to food waste and loss. Attempts to use synthetic chemicals to control this have generated other health and environmental problems. This study aimed to investigate the potential of pyrolyzed cocoa pod husk as a biopesticide (liquid Smoke (LS)) to protect cocoa beans against storage pests. The study was set up in a Completely Randomized Design (CRD) with five treatments (10%; 20%; 50%; 100 % concentrations of LS and 0 %as control). These were applied to the outer surface of mini jute sacks containing cocoa beans. A GCMS analysis of the LS detected 20 compounds. A repellence test of LS showed a very strong repellence effect, repelling almost 90% of the insect population. The feeding deterrence index also caused a reduction in bean damage from 22% in control to 7.65% for 100% LS-treated beans. Weight loss was reduced from 2.13% in control to 0.11 % in the sample treated with 100% LS. The LS treatment did not cause any significant change in the FFA and pH content of the beans. The organoleptic test also proved that LS treatment did not cause any substantial change in the flavor and overall taste and aroma acceptability. Therefore, the liquid smoke can be used for protecting cocoa beans by spraying on the outer part of jute sacks containing beans.

Pemanfaatan Asap Cair untuk Pengendalian Hama dan Penyakit Kakao

“…Pemanfaatan asap cair sebagai insektisida alami untuk pengendalian hama telah banyak dilaporkan antara lain oleh Mustikawati et al (2016), Prabowo et al (2016), untuk pengendalian hama penggerek buah kopi (Indriati & Samsudin, 2018), untuk mengendalikan rayap (Rosalina et al, 2016), hama penyimpanan kakao (Sutrisno et al, 2021) dan wereng coklat (Soedijo et al, 2015). Selain itu asap cair berpotensi dimanfaatkan sebagai fungisida alami antara lain untuk pengendalian jamur Fusarium pada tanaman karet (Ristiani et al, 2022), jamur Aspergillus flavus (Oramahi et al, 2011), penyakit darah pada pisang (Aisyah et al, 2018) dan penyakit kudis pada jeruk (Triwiratno et al, 2018).…”