The effect of chlorophyll in photo-oxidation of virgin coconut oil (VCO) during production and storage was studied. Photo-oxidation during VCO production was performed under accelerated conditions using fluorescent lights (4,000 lux) for 8 h. Peroxide values (PVs) and chlorophyll contents of the samples were measured at 1 h intervals. To compare the photo-oxidation during storage, VCO samples were separately stored under ambient and normal room light intensity (380-400 lux) for up to 4 months and PVs were measured weekly. The results indicated that relatively low light intensity during the settling stage of VCO production had no significant effect on photo-oxidation. Photo-oxidation of VCO, however, was observed during storage when exposed to high intensity fluorescent light. The degradation of chlorophyll content in VCO was evident during exposure to a high fluorescent light intensity which was accompanied by high lipid peroxide accumulation. A significant negative correlation between PV and chlorophyll content was found in VCO without light protection. The storage of VCO significantly increased the PV after 10 weeks. This study confirmed that chlorophyll which is naturally present in VCO even at a very low level (less than 0.1 ppm) could initiate a photooxidation reaction leading to quality deterioration during prolonged storage or display at retailers.

This study was intended to determine the effectiveness of ascorbic acid microemulsion for inhibiting photooxidation of virgin coconut oil (VCO). The ascorbic acid microemulsion was prepared by mixing ascorbic acid, deionized water, surfactant mixture, and VCO as continuous phase. Ascorbic acid microemulsion at 50, 100, 150, 200, or 250 ppm was dispersed into VCO. The same level of ascorbyl palmitate, TBHQ (tertiary butylhydroquinone), and BHA (butylated hidroxyanisole) were added into VCO and used for comparison. All of these samples were subsequently subjected to photooxidation under fluorescent light exposure (4,000 lux) for up to 8 hours at room temperature (30 ± 1 °C). Peroxide values and p-anisidine values of photooxidized samples were measured at 1 hour interval. The result indicated that at the level of 250 ppm, ascorbic acid which was included into the microemulsion system effectively inhibited photooxidation of VCO in comparison with the other antioxidants. This study confirmed that a highly hydrophilic singlet oxygen quencher (SOQ) such as ascorbic acid can be successfully incorporated into the microemulsion system and the addition of ascorbic acid microemulsion effectively inhibited photooxidation of VCO during storage under fluorescent light.

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Desa Bangunjiwo merupakan satu dari empat desa di Kecamatan Kasihan, Kabupaten Bantul, yangsebagian besar wilayahnya adalah pegunungan. Desa tersebut memiliki potensi alam sangat indah danlengkap karena terdapatnya beberapa sendang, kedung, kampung kerajinan, dan kelompok pengolahpangan. Melalui Program Kajigelem, Pemerintah Daerah Kabupaten (Pemkab) Bantul telahmerencanakan pengembangan potensi wilayah tersebut menjadi kawasan wisata terpadu denganunggulan budaya lokalnya (potensi alam, kerajinan gerabah, kipas bambu, ukir kulit, pahat batu, danmakanan tradisional). Untuk mewujudkan hal tersebut, pemerintahan desa sedang membangun sentrawisata Kajigelem, yang nantinya juga diharapkan dapat berfungsi sebagai sentra wisata edukasi yangterletak di wilayah Desa Bangunjiwo. Untuk mewujudkan hal tersebut, telah dilakukan pemilihan lokasiyang paling strategis, pengerasan jalan menuju lokasi terpilih, dan juga pembangunan kawasan sentrawisata. Dalam makalah ini akan diulas potensi pembangunan sentra wisata Kajigelem, masalah yangdihadapi, serta solusi yang dapat dilakukan agar pembangunan sentra wisata tersebut sesuai sasaran.Harapan ke depannya adalah, Desa Bangunjiwo dikenal sebagai destinasi wisata edukasi unggul diKabupaten Bantul.

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