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Efektivitas Minyak Atsiri dan Ekstrak N-Heksana Daun Beluntas sebagai Insektisida Alami dengan Bioindikator Ulat Hongkong: Efektivitas Minyak Atsiri dan Ekstrak N-Heksana Daun Beluntas sebagai Insektisida Alami dengan Bioindikator Ulat Hongkong Juwita , Tita; Agustin, Nadia; Riris, Ida Duma; Eddiyanto; Hendrawan
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 9 No 1 (2025): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v9i1.785

Natural insecticides are pest control materials derived from natural sources such as plants. The use of natural insecticides is very important because it has a lower cost, is safe for living things and does not pollute the environment, so this study aims to determine the activity of essential oils and n-hexane extracts of beluntas leaves (Pluchea indica L.) as natural insecticides with bioindicators of Hong Kong caterpillars (Tenebrio molitor). Isolation of essential oils was carried out using the steam distillation method and extraction using the maceration method. Insecticide activity tests used the contact poison method and the residue method, with variations in extract and essential oil concentrations of 1%, 3%, 5%, 7%, 10%, 20%, 30% (v/v) and positive controls, namely Hippo insecticide and negative control tween 80. The results of the isolation of essential oils from beluntas leaves produced a yield of 2%, while extraction using the maceration method produced a yield of 1.84%. The results of the insecticide activity test using the contact poison method were more effective than the residue method. The insecticidal activity and n-hexane extract are more effective than essential oils, this is due to the differences in the content of secondary metabolite compounds contained in the extract and essential oil.

Efektivitas Minyak Atsiri dan Ekstrak N-Heksana Daun Beluntas sebagai Insektisida Alami dengan Bioindikator Ulat Hongkong: Efektivitas Minyak Atsiri dan Ekstrak N-Heksana Daun Beluntas sebagai Insektisida Alami dengan Bioindikator Ulat Hongkong Juwita , Tita; Agustin, Nadia; Riris, Ida Duma; Eddiyanto; Hendrawan
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 9 No 1 (2025): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v9i1.785

Natural insecticides are pest control materials derived from natural sources such as plants. The use of natural insecticides is very important because it has a lower cost, is safe for living things and does not pollute the environment, so this study aims to determine the activity of essential oils and n-hexane extracts of beluntas leaves (Pluchea indica L.) as natural insecticides with bioindicators of Hong Kong caterpillars (Tenebrio molitor). Isolation of essential oils was carried out using the steam distillation method and extraction using the maceration method. Insecticide activity tests used the contact poison method and the residue method, with variations in extract and essential oil concentrations of 1%, 3%, 5%, 7%, 10%, 20%, 30% (v/v) and positive controls, namely Hippo insecticide and negative control tween 80. The results of the isolation of essential oils from beluntas leaves produced a yield of 2%, while extraction using the maceration method produced a yield of 1.84%. The results of the insecticide activity test using the contact poison method were more effective than the residue method. The insecticidal activity and n-hexane extract are more effective than essential oils, this is due to the differences in the content of secondary metabolite compounds contained in the extract and essential oil.

ntesis Perekat Kayu Lignin–Urea Formaldehida (LUF) Berbasis Lignin yang Diekstraksi dari Tandan Kosong Kelapa Sawit (TKKS Dian Wardana; Eddiyanto; Nurfajriani; Dwi Sapri Ramadhan; Wulan Dwi Safitri; Jam'an Fahmi
ALKIMIA Vol 10 No 1 (2026): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ccj7gm39

Oil palm empty fruit bunches are one of the underutilized plantation wastes. Lignin is one of the components of plant cell walls besides cellulose and hemicellulose that can be used as a raw material for the synthesis of lignin-based adhesives, namely lignin-urea-formaldehyde (LUF) adhesive resins. The polymerization reaction of LUF formation was confirmed from the shift and change in the FTIR wavenumber of the -CO-ether group of LUF compared to UF and LF obtained during the synthesis process. The tensile strength test results of all adhesives produced exceeded the tensile strength value of commercial UF adhesives, and it was found that increasing the lignin concentration in the synthesized adhesives was directly proportional to the tensile strength value. Increasing the lignin concentration was also able to reduce formaldehyde emissions from all variations of adhesives produced, but was unable to exceed the lower formaldehyde emission value of UF adhesives.

Analysis Relationship between Free Fatty Acid and Peroxide Values in Crude Palm Oil Industry Ramlan Silaban; Marta Adeliana Sijabat; Afrilita Harahap; Timotius Agung Soripada; Marham Sitorus; Eddiyanto; Ahmad Nasir Pulungan
ALKIMIA Vol 10 No 1 (2026): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/x133fg91

Crude Palm Oil (CPO) is crude palm oil extracted from the palm oil industry that has not undergone a refining process. CPO quality is considered good if it meets applicable quality standards. This study aims to determine a mathematical equation model that describes the relationship between free fatty acid value (FFA) quality parameters and peroxide value (PV) in CPO samples. FFA content analysis was carried out using the alkalimetric titration method, while the peroxide value was tested using the iodometric titration method. The storage time variations used were 0 - 3 weeks. The results showed that : (1). The sample consist Free Fatty Acid value (FFAV) were 2.97%; 3.22%; 3.41%; and 3.66%, respectively, with an average of 3.31%. Meanwhile, Peroxyde Value (PV) were obtained at 1.85; 2.25; 2.65; and 3.04 meq O₂/kg. (2). According to these results, the FFAV content still meets the Indonesian National Standard (SNI) standard (<5.0%) and the PV value is also below the SNI limit (<10 meq O₂/kg). (3). The mathematicals model of relationship between FFAV shows a significant effect with a linear regression equation of Y = 0.436x + 0.0221 and a determination value (R²) of 0.0976. (4). This model indicates that an increase in FFA levels is directly proportional to an increase in peroxide value. The mathematical model obtained illustrates that an increase in PV is in line with an increase in FFA levels, both of which play an important role in determining the quality stability and storage durability of CPO.

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