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Evaluation of Fruit Characters, Xanthones Content, and Antioxidant Properties of Various Qualities of Mangosteens (Garcinia mangostana L.) Ani Kurniawati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 3 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.699 KB) | DOI: 10.24831/jai.v38i3.14969

Abstract

Xanthone in mangosteen fruit hull has antioxidant activities. The objective of this experiment was to determine xanthones content, physical and chemical characters, and antioxidant potentials of several groups of mangosteens qualities. The experiment was carried out from January 2008 to August 2008. The research used a randomized complete block design with four replications. The treatments were four physical fruit conditions: large size mangosteens (≥ 100 g), small size mangosteens (min. 50 g), yellow sap dotted fruits, and scabbed fruit. The parameters being observed were physical and chemical characteristics, xanthone content, and radical scavenging activity of mangosteen fruit hull extract. The results demonstrated that the physical condition of fruit significantly affected physical fruit hull characters and chemical fruit characters. Characters of fruit hull, thickness, fresh weight, and dry weight, differed among fruit qualities. The physical condition of fruit hull also significantly influenced total soluble solid and vitamin C content, but did not affect total titrable acid and degree of acidity of the fruits. Fruit hulls of all groups of mangosteen qualities had similar antioxidant properties with the IC50 value of 5.57-6.11 ppm. Keywords: benzophenone, scab, vitamin C, yellow sap
Enhancing Agroecology in Pepper (Piper nigrum L.) Cultivation with Centrosema pubescens Ground Cover: A Study from Central Bangka, Indonesia Ani Kurniawati; Sitti Nurul Aini; Nyayu Siti Khodijah; Adryade Reshi Gusta
Caraka Tani: Journal of Sustainable Agriculture Vol 39, No 2 (2024): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v39i2.90003

Abstract

Pepper cultivation in Bangka Island primarily takes place on sandy land. Legume cover crops, such as Centrosema pubescens, which has been widely used as a ground cover, are anticipated to improve land quality by maintaining soil temperature and humidity, increasing soil organic carbon content, increasing soil porosity, and improving soil fertility. This research aims to analyze the agroecosystem of pepper plants, by comparing the use of the cover plant C. pubescens as a soil treatment and the absence of using these cover plants as a control. The research was conducted in farmers’ pepper gardens in Perlang Village, Central Bangka Regency, Bangka Belitung Province. The research employed a randomized block design, with C. pubescens and natural vegetation as treatments, each replicated 3 times. The variables measured were soil temperature and humidity; abundance of microorganisms; weed density, frequency, and dominance; chlorophyll a, chlorophyll b, and anthocyanin content of pepper leaves; photosynthesis rate; transpiration rate; stomatal conductance; soil chemical and physical properties. The results showed that C. pubescens as ground cover could reduce the dominance of the Bidens pilosa weed (relative dominance of 36.16%) but led to an increase in the dominance of Chromolaena odorata (relative dominance of 38.7%). C. pubescens ground cover could also maintain stable soil temperature and moisture, and increase P, K, Ca, and Mg soil content by 100%, 100%, 43.6%, and 48.3%, respectively. Furthermore, pepper plants grown with C. pubescens exhibited 25%, 23.7%, and 16% higher chlorophyll a, total chlorophyll, and carotenoid content, respectively, compared to those grown without the cover crop.
Workshop Digitalisasi Periodisasi Latihan Menggunakan Microsoft Excel bagi Pelatih Olahraga Arifin, Z.; Hermawan, Irwan; Sonjaya, Azhar Ramadhana; Angga Permadi, Asep; Kosasih, Alam Hadi; Kurniawati, Ani; Bara, Asma; Annisa, Anne Patmah; Nugraha, Faiza Eka; Nugraha, M. Fakhrian
Jurnal Pengabdian Olahraga Masyarakat (JPOM) Vol 6, No 3 (2025): November 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jpom.v6i3.25000

Abstract

Kegiatan Pengabdian kepada Masyarakat (PkM) ini bertujuan untuk meningkatkan pengetahuan dan keterampilan para pelatih olahraga dalam merancang program periodisasi latihan berbasis digital dengan memanfaatkan Microsoft Excel. Latar belakang kegiatan ini adalah masih banyaknya pelatih yang menyusun program latihan secara manual, khususnya pelatih olahraga di Kabupaten Garut. Metode yang digunakan meliputi identifikasi kebutuhan mitra, penyuluhan mengenai teori latihan dan kondisi fisik, pelatihan penyusunan periodisasi latihan dengan Excel, serta evaluasi melalui pretest, posttest, dan angket kepuasan. Peserta kegiatan ini berjumlah 25 orang yang seluruhnya merupakan pelatih olahraga di Kabupaten Garut. Hasil evaluasi menunjukkan adanya peningkatan signifikan pada kemampuan peserta. Rata-rata skor pretest adalah 22,5 dengan standar deviasi 3,74, sedangkan rata-rata skor posttest meningkat menjadi 31,4 dengan standar deviasi 2,24. Peningkatan sebesar 39,6% ini membuktikan bahwa pelatihan berbasis digital efektif dalam meningkatkan kompetensi peserta. Selain itu, penurunan standar deviasi menunjukkan hasil pembelajaran yang lebih merata. Kesimpulannya, digitalisasi periodisasi latihan menggunakan Microsoft Excel terbukti menjadi solusi inovatif dan efisien dalam membantu pelatih dan mahasiswa merancang program latihan modern secara sistematis, akurat, dan mudah diadaptasi sesuai kebutuhan.
Co-Authors , Krisantini ,, Herlina . Herlina Ade Wachjar Ade Wachjar Adolf Pieter Lontoh, Adolf Pieter Adryade Reshi Gusta Aini , Sitti Nurul Andika Triansyah Anita Th. Sinaga Anjeli Sulistianti Paisey Annisa, Anne Patmah Aplugi, Dewie Maria Agustien Arisandi, Syafik Arista, Nor Isnaeni Dwi Astari, Asty Sani Bara, Asma Basuki , Besse Amriati Burhanudin, Mohamad Cahyo, Septian Dwi carsiwan, carsiwan Danar Hadisugelar Darius Dare Dedy Harto Delyani, Rista Destiawan, Nurcahya Dwi Guntoro Dzaky, Rizky Indirwan Edi Djauhari P Edi Santosa Edvanido, Hijrianto Eko Sulistyono Elda Kristiani Paisey Endang Gati Lestari Evi Setiawati Fadillah, Nurdiansyah Faisal Al Asad Faisal Alfarisi Fardidah, dan Didah Nur Farhan Mohamad Jamil Faridah, dan Didah Nur Fauzan, Rifqi Ahmad Febjislami, Shalati Fridahaqi, Rhaisyarara Gin Gin Ginanjar, Gin Gin Gusrevindo, Ludiantika Hariyadi Hariyadi Haryanto, Pesol Hasanudin Hasanudin Hayu Siwi Pribadi Hazkia Yunaira Hendra Darmawan Hendrayana Hendrayana, Hendrayana Ilham Ismail, Taopik Irwan Hermawan Irwan Hermawan Isdy Sulistyo Juang Gema Kartika Kanny, Putri Irene Ketty Suketi Khodijah , Nyayu Siti Kosasih, Alam Hadi Latifah K. Darusman Launuru, Syahdin Lukitowati, Suci Luthfi, Mukhtar M A Chozin M. Ainun Najib Manik, Auhge Eva Sari Mardisiwi, Ririh Sekar Marlin Sefrila Maryarti Sari Maryati Sari Matra, Deden Drajat Maulana, Kiki Maya Melati Mohamad Rahmad Suhartanto Mukhsin, Moh. Mukhtar Luthfi Mulyani, Tresna Munif Ghulamahdi Muslimin, Muhammad Farid Naufal Nadesha, Falendha Nobuo Sugiyama Nugraha, Aldy Nugraha, Faiza Eka Nugraha, M. Fakhrian Nur Faridah, dan Didah Nurcahya Destiawan Nurholis Nurholis Nurlailah Nurlailah Nurparisi, Muhammad Luthfi Nyayu Siti Khodijah Paisey, Elda Kristiani Permadi, Asep Angga Prihati Cahyaning Pertiwi, Rika Purwono Putra, Bayu Pradana Raden Ajeng Diana Widyastuti Raharjo, Purwo Rahmawati, Ain Nur Rani Yulie Rachmawaty Respita, Intan Annisa Rissa Rahmania Riti, Dominggus Ngongo Rizki Candra Gumilar Roby Hardian Susanto Rudi Suryadi Sandra Arifin Aziz Sari, and Maryati Sari, Galuh Yunita Setyadjit Siti Nabila Nur Safha Sitti Nurul Aini Slamet Susanto Sofiana, Annisa Sofyan Zaman Sonjaya, Azhar Ramadhana Sri Wilarso Budi Suci Rahayu Sudirman Yahya Sunartini, Nina Supijatno Supijatno Supijatno Susanti, Destia Susanti, Lea Suwarto Suwarto Syafitri, Natasya Desty Taopik Ridwan Turi Handayani Undari, Desti Utama, Ulfiana Mahira Rahma Waras Nurcholis Wibiksana, Sopian Widodo, Winarso Drajat Winarso D. Widodo Yanti, Ayu Lestari Rahma Yudiwanti Wahyu E. Kusumo Yunus, Annizar Gunawan Yusi Riksa Yustiana, Yusi Riksa Z Arifin Z. Arifin Z. Arifin Z.Arifin Zaenal Arifin Zainal, Muhamad Zarima Wibawati