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Family Marantaceae
Araro
Maranta arundinacea Linn.
ARROWROOT
Zhu yu

Scientific names Common names 
Maranta arundinacea Linn. Araro (Tag.) 
Maranta indica Tussac. Araru (Ibn., It,, Tag.)
Maranta ramosissima Wall.  Aroru (Tag.)
Maranta sylvatica Rosc. Aruru (Tag.) 
Maranta sylvatica Roscoe ex Sm. Bai (Iv.)
Maranta variegatum N. E. Brown  [Illegitimate] Galamaka (Bon.)
  Sagu (Bik., Ilk.)
  Uraro (Tag.)
  Arrowroot (Engl.)
  Maranta (Engl.)
  Obedience plant (Engl.)
Maranta arundinacea L. is an accepted name. The Plant List

Other vernacular names
CHINESE: Zhu yu.
DANISH: Salepmaranta.
DUTCH: Pijlwortel, Salepwortel.
FRENCH: Arrowroot des Antilles, Dictame (Antilles), Herbe aux flèches, Maranta arundinacée.
GERMAN: Pfeilwurz.
HINDI: Tikhor, Tikkor.
JAPANESE: Kuzuukon, Maranta.
MALAY: Garut, Ubi bemban, Ubi garut, Yaitu garut (Indonesia).
PORTUGUESE: Agutiguepa, Araruta-comum, Araruta-especial, Araruta- palmeira, Aru-aru.
RUSSIAN: Maranta trostnikovaia, Maranty trostnikovoi.
SANSKRIT: Tavaksiri, Tugaksiri.
SPANISH: Ararú, Araruta, Caña flecha, Chuchute tamalera, Guape, Guate, Jamachipeke, Jamaichepeque, Juájuá, Juá-juá, Maranta, Rizoma de maranta, Sagú, Sagú de San Vicente, Saguero, Silú, Sucu, Sulú, Shimipampana, Tacea, Tamalera, Tubérculo de maranta, Yerén, Yuquilla.
TAMIL: Aruruttukkilangu, Kukai niru.
VIETNAMESE: Dong củ.

Gen info
• Although "Arrowroot" refers to any plant of the genus Maranta, its popular use is to describe the digestible starch from the rhizomes of the Maranta arundinacea. There is evidence to show arrowroot cultivation 7,000 years ago.
• The word may derive from (1) a corruption of the Aru-root of the Aruac Indians of South America, (2) Aru-aru. referring to the native Caribbean Arawak people's "meal of meals" for which the plant is a dietary staple, and (3) Arrowroot's use for treating poison arrow wounds.
• Year-old roots are used; and when good, contain 23% starch. After washing and clearing of paper-like scales, It is beat to a pulp through a wheel rasp. The milky fluid is passed through a coarse cloth or sieve; the resultant pure low-protein mucilaginous starch settles as an insoluble powder that is sun-dried or processed dried power to become the arrow-root of packaged or canned commerce.
(1) (2)

Botany
Araru is an erect, smooth, dichotomously branched herbaceous perennial plant 1 - 2 meters high, growing from fleshy, fusiform rootstock. Stems are slender. Leaf blades are lanceolate, attenuate-acuminate, 10 to 20 centimeters long, thin petioled, green and rounded at the base. Inflorescence is terminal, lax, divaricate, and few-flowered. Flowers are white, about 2 centimeters long.

Distribution
- Widely distributed in the Philippines in cultivation for its starch-storing rhizomes.
- Native of tropical America.
- Now pantropic.

Constituents
- The tuber consists of 27% starch, 63% water, 1.56% albumin, 4.10% sugar, gum, etc., 0.26% fiber and 1.23% ash.

- Plant yields starch (27.17%), fiber, fat, albumen, sugar, gum, ash, and water (62.96%).
- Rhizome skin yields a bitter and resinous substance, removed in peeling in the preparation of arrowroot starch.
- Phytochemical screening of various extracts of rhizomes yielded flavonoids, alkaloids, tannins, glycosides, steroids, phenols, cardiac glycosides, saponins, carbohydrates, and proteins. Gas chromatography-mass spectrometry (GC-MS) analysis of phytoconstituent rich ethanolic extract of rhizome yielded 49 compounds. (12)
- Nutrition analysis per cup of sliced arrowroot (about 120 gm) yields: 78 calories, 0.2 g fat (0.1 g polyunsaturated fat), 31 mg sodium, 16 gm carbohydrate, 5 g protein, 545 mg potassium, 2.7 mg iron, 0.3 mg vitamin B6, 0.2 mg thiamin, 2 g niacin, 30 mg magnesium, 0.1 mg riboflavin (B2), 2.3 mg vitamin C. (22)

Properties
- The starch is white, odorless, tasteless.

- Starch is considered nutrient, demulcent and emollient.

- Considered stomachic, anti-inflammatory, demulcent, sedative and digestive.
- Studies have suggested antimicrobial, immunomodulatory, antioxidant properties.

Parts utilized
Roots, rhizomes.

Uses
Culinary / Nutrition
- Rhizomes are edible, produce the arrowroot starch.
- Highly digestible.
- Used as thickener in making puddings, baked goods, and sauces.
- Boiled and roasted or ground and made into pastries.
- In remote barrios, starch also used for starching clothes.
- Valuable as an easily digested and nutritive and nourishing diet for the convalescing.
- Well suited for infants in the weaning from breast milk.
- A chief ingredient in infant cookies.
- Preparation: Decoction from 2-3 tablespoonfuls of root powder in one liter of water, seasoned with honey, lemon or any variety of fruit juices to taste.
Folkloric
- In the West Indies, roots used for poulticing poisoned and other wounds.
- Mashed roots as plaster applied to areas of insect stings and spider bites.
- Applied to the skin to soothe painful, irritated and inflamed mucous membranes.
- Roots also poulticed for poisoned arrow wounds.
- Starch used as soothing application for various skin problems: erysipelas, sunburn, wasp stings, dermatitis, and gangrene. In the Caribbean, pounded leaves used as teething aid. In Trinidad, used as anti-inflammatory skin poultice. (Duke 1985; Honychurch 1991) (16)
- The fresh juice is used as antidote for vegetable poisons.
- Used to soothe the stomach and as a remedy for diarrhea, probably from its high starch content.
- Jah Hut peoples in Malaysia drink a root decoction for burning stomach complaints after delivery. (26)
- Rhizome considered aphrodisiac. (27)
Others
- In remote Philippine barrios, starch also used for starching clothes.
- Ancient Mayans and other Central American tribes used it as antidote for poison-tipped arrows.

- An ingredient in many natural deodorants. Starch used as base for face powders and preparation of special glues. Used as suspending agent in the preparation of barium meals. The starch preferred in tablet making because of its fast disintegration. (25)
-
New uses
- Study suggests beneficial effect in the treatment of diarrhea associated with irritable bowel disease (IBS).

Studies
Enterokinase Inhibition: A study of 22 tubers and 9 pulses screened for inhibitors of enterokinase activity showed Maranta arundinacea as one of 12 tubers with inhibitory activity. M arundinacea also exhibited endogenous esterase activity towards benzoyl arginine ethyl ester. Any factor in food capable of suppressing enterokinase activity would lead to digestive disturbance comparable to enterokinase deficiency. (3)
Anti-Diarrheal: Study on the effect of boiled and cooled supernatant of arrowroot and water on children during acute diarrhea showed a decrease in cholera toxin-induced net water secretion or reversal to net absorption.(7)
Antimicrobial on Foodborne Pathogens: Study showed the water extract of Arrowroot tea at 10% greatly inhibited the microbial growth of gram-positive and gram-negative pathogens tested.(8)
Antioxidant: Study evaluated an ethanolic extract for antioxidant activity. Results showed high antiradical activity against DPPH, ABTS, hydrogen peroxide and nitric oxide radicals. The antioxidant activity was comparable to BTH. (9)
Study of methanolic extract from M. arundinacea rhizomes showed considerable in vitro antioxidant and free radical scavenging activities in a dose dependent manner when compared to standard antioxidant (ascorbic acid/trolox). (23)
Immunomodulatory: Study evaluated the immunostimulatory effects of arrowroot extracts in vitro using animal culture techniques and in vivo using BALB/c mice. Results showed the arrowroot tuber extracts stimulated IgM and immunoglobulin production in vitro, and in vivo increased serum IgG, IgA, and IgM levels in mice. (10)
Potential Source of Ethanol: Study evaluated Uraro (Arrowroot) for its potential as source of ethyl alcohol or ethanol. Three different treatments of rhizomes and water were used. The percentage purity of the alcohol in all treatments based on 56% purity. (11)
Effect on Survival of Probiotic Bacteria in Yoghurt: Study evaluated the effect of arrowroot carbohydrates on survival of lactobacilli in bio-yoghurts. Results suggest arrowroot carbohydrates can be used to enhance the Latobacilli population in bio-yoghurt during refrigerated storage. (13)
Antimicrobial / Arrowroot:Study evaluated the antimicrobial effect of a water extract of M. arundinacea tea on foodborne pathogens in liquid medium. Cocktail of four pathogenic bacteria (E. coli, S. enteritidis, L. monocytogenes and S. aureus) was inoculated o into arrowroot tea solutions. Results showed 0.63% of Arrowroot tea was effective in inhibiting all pathogens to minimum detection limit. (14)
Biomass as Feed, Fuel and Fiber Source: A 1984 study evaluated arrowroot biomass and processing residues as feed, fuel and fiber resource. Biomass and residues yielded 10.8-21.1% crude protein; 11.1-30.2 crude fiver; 3.8-17.0% ash; with an invitro dry matter digestibility of 38.5-60.3%. Study identified the fuel alcohol production potential from yeast-supplemented aerial biomass. Coarse residue showed qualities suited to tear-resistant specialty grade papers. Besides utilization of by-products as food,fuel, and fiber resource, it can also help reduce environmental pollution resulting from direct discharge of unused by-products. (15)
Antidiarrheal / Cytotoxicity / Leaves: Study investigated the antidiarrheal and cytotoxic activities of a methanolic extract of M. arundinacea leaves in rats and brine shrimp, respectively. Results showed an antidiarrheal effect with significant reduction of castor oil-induced intestinal volume and intestinal transit comparable to standard drug loperamide. The extract also showed potent effect against brine shrimp with an LD50 of 420 µg/mL. (18) 
Phenolic, Flavonoid and Flavanol Content / Rhizomes: Study determined the total phenol, flavonoid, and flavonol content of an ethanolic extract of rhizomes of M. arundinacea. An ethanolic extract showed a TPC of 390 ± 11 mg GAE/100g, TFC of 290 ± 7 mg QE/100g and a total flavonol content of 150 ± 9 mg QE/100 g. (19) 
• Potential of Gluten-Free Enriched Flour as Functional Food: Study evaluated the potential of Maranta arundinacea flour modifications for increasing levels of resistant starch to increase the functional properties of gluten-free flour. Study suggests the gluten-free enriched resistant, starch type 3 flour from M. arundinacea can help keep glucose and lipids under normal conditions, suggesting a potential use as functional food, especially for those with difficulty in managing glucose and lipid profiles. (20)
• Benefit on Bacterial Content and Chemical Properties of Digesta: Study evaluated the effect of arrowroot containing diet on the bacterial population and chemical properties of rat digesta. In vivo study showed the diet containing arrowroot powder significantly increased (p<0.05) population of lactobacilli. The digesta had lower pH, higher water content, and higher butyrate. Results suggest supplementation of arrowroot power in the diet improved bacterial and chemical properties of digesta. (21)
• Acute Toxicity Study / Antiulcerogenic / Adaptogenic / Rhizomes: Study evaluated the acute toxicity and antiulcerogenic potential of rhizome starch of M. arundinacea and C. angustifolia. Both plants did not produce any toxic symptoms or mortality up to a maximum dose of 4400 mg/kg. Both significantly reveresed the stress-induced ulceration. The rhizome starch of M. arundinacea significantly reversed the hypothermia induced by forced-swimming. (24)
• Potential of Arrowroot Fiber for Nanowhiskers Cellulose: Agribusiness generates countless sources of underutilized biomass. Study evaluated the arrowroot fiber as a source of raw material for cellulose nanowhiskers production by acidic hydrolysis. Results showed the nanowhiskers of cellulose extracted from arrowroot fiber has great potential as reinforcing agents in the nanocomposites production as compared to others cellulose nanowhiskers sources in measures of performance, good thermal stability, crystalline index and good aspect ratio. (28)

Availability
- Wild-crafted.
- Cultivated for arrowroot starch.
- Starch and flour products in the cybermarket.


Updated February 2019 / June 2017 / April 2016


Photos © Godofredo Stuart / StuartXchange

Additional Sources and Suggested Readings
(1)
Arrowroot (Maranta arundinacea) / Natural Standard
(2)
Arrowroot / Encyclopedia / NationMaster
(3)
Enzyme inhibitors from plants: Enterokinase inhibitors in tubers and seeds / P. GOPALAKRISHNA BHAT et al / J. Biosci., Vol. 3, Number 4, December 1981, pp. 371378.
(4)
Maranta.—Arrow-Root / Henriette's Herbal Homepage
(5)
Arrowroot / Botanical: Maranta arundinaceae (LINN.) / A Modern Herbal / Mrs. M Grieve
(6)
Sorting Maranta names / Multilingual Multiscript Plant Name Database
(7)
Diarrheal Diseases Research / Google Books / March 1991
(8)
Antimicrobial effect of water extract of Arrowroot (Maranta arundinacea) tea on foodborne pathogens in liquid medium / S Kim, DYC Fung / Session 29F, Food Microbiology: Control of foodborne microorganisms by antimicrobials
(9)
Antioxidant Activity of Ethanolic Extract of Maranta arundinacea L. Tuberous Rhizomes
/ Nishaa S, Vishnupriya M, Sasikumar J M, et al / Asian Journal of Pharmaceutical and Clinical Research, Vo 5, No4, June 4, 2012.
(10)
Evaluation of immunostimulatory effect of the arrowroot (Maranta arundinacea. L) in vitro and in vivo / Ika Dyah Kumalasari, Eni Harmayani, Lily Arsanti Lestari, Sri Raharjo, Widya Asmara, Kosuke Nishi, and Takuya Sugahara / Cytotechnology. 2012 March; 64(2): 131–137 / doi: 10.1007/s10616-011-9403-4
(11)
Ethanol from arrow root (Maranta Arundinacea Linn) / SCINET Phil. / (S-14);29p.
(12)
Phytochemical Screening and GC-MS Analysis of Ethanolic Extract of Rhizomes of Maranta arundinacea L
/ Nishaa S, Vishnupriya M, Sasikumar JM, and Gopalakrishnan VK / Research Journal of Pharmaceutical, Biological and Chemical Sciences, Apr-June 2013; Vol 4, Issue 2.
(13)
The Effect of Arrowroot (Maranta arundinacea) Extract on the Survival of Probiotic Bacteria in Set Yoghurt
/ Nishani Abesinghe, Janak Vidanarachchi, Saliya Silva / International Journal of Scientific and Research Publications, May 2012; Volume 2, Issue 5: pp 1-4
(14)
Antimicrobial effect of water extract of Arrowroot (Maranta arundinacea) tea on foodborne pathogens in liquid medium / S. KIM and D. Y. C. Fung. / Session 29F, Food Microbiology: Control of foodborne microorganisms by antimicrobials / 2003 IFT Annual Meeting - Chicago
(15)
Arrowroot (Maranta arundinacea), food, feed, fuel, and fiber resource / M. D. Erdman, B. A. Erdman / Economic Botany, July/September 1984, Volume 38, Issue 3, pp 332-341
(16)
Bermuda or West Indian Arrowroot (Maranta arundinacea) / Cheryll Williams / Medicinal Plants in Australia Volume 3: Plants, Potions and Poisons / Google Books
(17)
Maranta arundinacea / Synonyms / The Plant List
(18)
Evaluation of Antidiarrheal Activity of Methanolic Extract of Maranta arundinacea Linn. Leaves
/ Md. Khalilur Rahman, Md. Ashraf Uddin Chowdhury, Mohammed Taufiqual Islam, Md. Anisuzzaman Chowdhury, Muhammad Erfan Uddin, and Chandra Datta Sumi / Advances in Pharmacological Sciences
Volume 2015 (2015) / http://dx.doi.org/10.1155/2015/257057 /
PMCID: PMC4543376 / PMID: 26346095
(19)
Qualitative Assessment of Ethanolic Extract of Maranta arundinacea L. Rhizome Using HPTLC / Nishaa S, Vishnupriya M, Gopalakrishnan VK / International Research Journal of Pharmacy, 2013, 4 (2)
(20)
Proximate and Chemical Analysis of Gluten-free Enriched, Resistant Starch Type 3 from Maranta arundinacea Flour and its Potential as a Functional Food / Mutiara Nugraheni, Badraningsih Lastariwati and Sutriyati Purwanti /  Pakistan Journal of Nutrition, 16: 322-330. / DOI: 10.3923/pjn.2017.322.330
(21)
Effect of arrowroot (Maranta arundinacea L.) diet on the selected bacterial population and chemical properties of  caecal digesta of Sprague Dawley rats / Eni Harmayani, Ika Dyah Kumalasari and Y. Marsono / International Research Journal of Pharmacology
(22)
Arrowroot Nutrition Facts / Dr. Axe / Food is Medicine
(23)
EVALUATION OF TOTAL PHENOLIC AND FLAVONOID CONTENTS AND IN VITRO ANTIOXIDANT ACTIVITY OF RHIZOME OF MARANTA ARUNDINACEA L. / Ruba, A. Agnel; Mohan, V. R. / Pharma Science Monitor, Apr 2013; Vol 4, Issue 2: pp 3914-3928
(24)
Evaluation of acute toxicity and anti-ulcerogenic study of rhizome starch of two source plants of Tugaksheeree (Curcuma angustifolia Roxb. and Maranta arundinacea Linn. / N. Rajashekhara, B K Ashok, Parmeshwar P Sharma, and B. Ravishankar / Ayu., Oct-Dec 2014; 35(4): pp 433–437 / doi: 10.4103/0974-8520.159013 / PMID: 26195908
(25)
Medicinal and edible tubers from fourty two settlements of Tribals from Pechiparai Social forest in Kanyakumari District, India / Sujatha S and F. Briska Renuga / Sch. Acad. J. Biosci., 2013; 1(5): pp 213-216
(26)
Ethnobotanical Study of Medicinal Plants Used by the Jah Hut Peoples in Malaysia / K W Lin / Indian J Med Sc., April 2005; 59(4)
(27)
Pharmacological Potential of Plant Used as Aphrodisiac / Baljinder Singh, Vikas Gupta, Parveen Bansal, Ranjit Singh, Dharmendra Kumar / International Journal of Pharmaceutical Sciences Review and Research, Nov-Dec 2010; 5(1): pp 104-113
(28)
Renata Mariano de Sa et al Preparation and Characterization of Nanowhiskers Cellulose from Fiber Arrowroot (Maranta arundinacea) / Renata Mariano de Sa et al / Mat. Res. Vol18, Supl 2,  São Carlos, Dec. 2015 / http://dx.doi.org/10.1590/1516-1439.366214

It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page.

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