<![CDATA[Periurban agriculture actually means agriculture that is found surrounding urban boundary. Due to heavy load for various non-agricultural activity and transportation, it necessary to pay attention on the agro-ecological conditions where each crop could grows well. The quality of environment for growing plantsin periurban influences on composition of biochemistry in plants’ tissue. The purpose of this study is to determine the chlorophyll, carotenoid, and ascorbic acid contents in three species of vegetables, those are bayam (Amaranthus tricolor, L.), kangkung (Ipomoea reptans) and sawi (Brassica juncea L.) which were cultivated in three periurban agriculture areas of Surabaya. Total contents of chlorophyll and carotenoid was measured by spectrophotometer. Vitamin C contents was analyzed by DCPIP dye method. The results showed that bayam which was cultivated in Bangkingan-Lakarsantri has the highest content of chlorophyll (3.046 mg/g ) and carotenoid (375.33 μmol/L). The highest content (4.55 μg/g) of vitamin C was found on sawi which was cultivated in Wonorejo. There was no significant difference on chlorophyll content, carotenoid content and vitamin C content between organic vegetables labeled and those are cultivated on Bangkingan-Lakarsantri periurban area.
Kawasan pertanian periurban merupakan daerah pertanian yang dijumpai di sekitar pinggiran perkotaan. Berkaitan dengan tekanan lingkungan yang berat di kawasan periurban, akibat berbagai kegiatan non pertanian dan transportasi, perlu adanya perhatian terhadap kondisi agro klimat yang mempengaruhi pertumbuhan tanaman. Kualitas lingkungan tempat tumbuh tanaman pada kawasan pertanian periurban berpengaruh terhadap komposisi kandungan biokimia jaringan tanaman. Tujuan penelitian ini adalah untuk menetapkan kadar klorofil, karotenoid, dan vitamin C pada sayuran bayam (Amaranthus tricolor, L.), kangkung (Ipomoea reptans) dan sawi (Brassica juncea L.) yang dibudidayakan di tiga kawasan periurban Kota Surabaya. Kadar klorofil dan karotenoid diukur dengan spectrophotometer, sedangkan kandungan vitamin C ditetapkan dengan metode titrasi DCPIP. Hasil penelitian menunjukkan bahwa sayuran bayam yang dibudidayakan di kawasan Bangkingan-Lakarsantri memiliki kadar klorofil (3.046 mg/g) dan karotenoid (375.33 μmol/L) tertinggi. Kandungan vitamin C tertinggi (4.55 μg/g) terdapat pada sayuran sawi yang dibudidayakan di kawasan Wonorejo. Tidak ada perbedaan nyata pada kadar klorofil, karotenoid dan vitamin C antara sayuran organik dengan sayuran yang dibudidayakan di kawasan periurban Bangkingan-Lakarsantri.]]>
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