Vol. 5 No. 2 (2022): JULI 2022

Articles

• Removal of Heavy Metal Copper (Cu) Ions from Wastewaters Using Various Bio-adsorbents

  Khairunnisa Khairunnisa, Siti Rahmah, Rini Selly, Jasmidi Jasmidi, Hafni Indriati Nasution, Moondra Zubir

  58-62

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37447
  

• Bioethanol Levels from Corn Cob Waste: Effect of Fermentation Time and Saccharomyces cerevisiae Yeast Amount (Zea mays)

  Veronika Meiyuina Simatupang, Ramlan Silaban

  63-66

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37448
  

• Modification Of Natural Rubber Sir-20 With Cyclisation and Grafting Methods with Maleic Anhydride

  Eddiyanto Eddiyanto, Andreas Nababan, April Sinaga

  67-73

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37450
  

• Modified Natural Rubber Sir-20 Using Chain Scission Reaction Method And Grafting With Anhydrous Maleic

  April Sinaga, Eddyanto Eddyanto, Andreas Nababan

  74-79

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37451
  

• Cytotoxicity Test of Cocoa Leaf Ethanol Extract (Theobroma Cacao L.) With Brine Shrimp Lethality Test (BSLT) Method

  Zulmai Rani, Ridwanto Ridwanto, Dikki Miswanda, Rafita Yuniarti, Ani Sutiani, Ricky Andi Syahputra, Reza Irma

  80-87

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37452
  

• Toxicity Test of Windu Shrimp (Penaeus monodon) Skin Chitosan With Brine Shrimp Lethality Test Method

  Dina Suciati Saragih, Ridwanto Ridwanto, Anny Sartika Daulay, Dikki Miswanda, Haris Munandar Nasution

  88-93

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37453
  

• Effect of Giving of Ethanol extract of Ginger (Zingiber officinale Rosc.), Pandan leaves (Pandanus amarylifolius Roxb), Citronella (Cymbopogon nardus (L.) Randle), Cinnamon (Cinnamomum burmanii B.) on Cholesterol Reduction in Male Strain Rats (Rattus Norvegicus)

  ElySabet Pratiwi Siagian, Rumondang Fransiska Tampubolon, Ida Duma Riris

  94-97

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37454
  

• Bioethanol Manufacturing from α-Cellulose Waste of Empty Palm Oil Frugs (Elaeis guineensis jack) with Hydrolysis Concetration Variations HCl and Cellulase Enzyme

  Indra Masmur, Herliana Herliana, Bramwell Sitompul, Elvri Melliaty Sitinjak

  98-101

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37455
  

• Ethanol Production Comparison from Agricultural Waste of Cellulose Source Within Hydrolysis Hcl and Cellulose Enzyme

  Indra Masmur, Clairine Clairine, Mega Evelin Rajagukguk, Teti Purwita Sari, Elvri Melliaty Sitinjak

  102-105

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37456
  

• Caffeine Levels from Various Types of Coffee Drink Packaging Circulated in the Medan City Market Were Examined Using a UV Spectrophotometry Method

  Gabena Indrayani Dalimunthe, Adli Nuzula Rahmah, Zulmai Rani, Yayuk Putri Rahayu

  106-110

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  DOI : https://doi.org/10.24114/ijcst.v5i2.37465
  

• Formulation of Facial Wash from Nettle Leaf (Urtica Dioica L.) Ethanol Extract

  Mutiara Agustina Nasution, Zuhairiah Nasution, Fitria Mahdani

  111-116

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  DOI : https://doi.org/10.24114/ijcst.v5i2.40919