Nutritional Composition and Secondary Metabolites of «daun Woton» (Sterchulia Sp.): Alternative Raw Material for Fish Feed

Abstract

The woton leaves (Sterculia sp.) were collected from an island called Gag, Raja Ampat, West Papua, Indonesia in July, 2017. The objective of this study was to explore natural resources from Papua as an alternative raw materials for fish feed production. The leaves were cleaned, dried, grinded and finally analyzed to describe their chemical composition, vitamin C content and anti-nutritional content using the standard procedures. The findings showed that there were two types of woton plants (Sterculia sp.), namely Sterculia sp. and Sterculia trigacantha. The proximate composition for Sterculia sp. leaves was 4.8% protein, 0.5% fat, 64.32% water, 2.10% ash, 28.29% carbohydrate, and 81.79 mg/100 g vitamin C. The proximate composition for the Sterculia trigacantha leaves was 4.45% protein, 8.86% fat, 50.59% water, 1.4% ash, 34.22% carbohydrate, and 17.36 mg/100 g vitamin C. The woton leaves (Sterculia sp.) also contained secondary anti-nutrients/metabolites such as flavonoids, tannins, tannin errors, phenolic, and polyphenols. TLC Spectrophotometricometry test results showed that Sterculia sp. leaves contained hyperoside and routine flavonoids, whereas Sterculia trigacantha leaves contained compounds of quarcetin and routine flavonoids. The results of chemical and phytochemical screening tests showed that the leaves (Sterculia sp.) are potential and affordable raw material for fish feed production.

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“…Table 1 shows that kebar's grass (B. petersianum Klotzsch) contains vitamin C quite high by 418.2 mg/100g, different from Sterculia leaf which one of the Papua endemic plants containing vitamin C by 81.79 mg/100g (Sayuti et al, 2017). Gurame fish weight gain and feed supplementation give a good effect because of the content of vitamin C and flavonoid (Sulhi, Samsudin and Hendra, 2011).…”

Proximate, Amino Acid Composition and Antibacterial Activity of Woton (Sterculia sp.) Leaves from Raja Ampat, West Papua, Indonesia

“…The fat content of S. shillinglawii and S.tragacantha leaves are 3.14% and 3.09%. It is lower compared to bay leaves (3.96%) used as antidiabetic drugs (Safithri, Fahma, & Marlina, 2012 (Sayuti et al, 2017).…”

“…Woton (Sterculia sp.) leaves contain secondary metabolite compounds such as; flavonoids, tannins, tannins, phenolic, polyphenols (Sayuti, Supriatna, Hismayasari, Budiadnyani, & Yani, 2017). Phenolic and polyphenols are one of the biggest secondary metabolite groups that have shown antimicrobial activity, important subclasses in this group of compounds include phenols, phenolic acids, quinones, flavones, flavonoids, flavonols, tannins and coumarins (Bobbarala, 2012).…”

Nutrient Composition and Secondary Metabolite of Rumput Kebar (Biophytum Petersianum Klotzsch)

“…Dried plate was scanned by spectrophotometer TLC-Scanner 3 (Camag-Mutenz-Switzerland) at the wavelength of 210 and the spectrum of each peak is read on the range of wavelength 190-400 nm and tested its purity of the spectrum. Rf: 0.85-0.90 (Quercetin); Rf: 0.60-0.65 (Quercitrin); Rf: 0.45-0.50 (Hiperoside); Rf: 0.25-0.30 (Rutin) (Sayuti et al, 2017). Gurame fish weight gain and feed supplementation give a good effect because of the content of vitamin C and flavonoid (Sulhi, Samsudin and Hendra, 2011).…”