Digital library

  • This PowerPoint presentation (in PDF format) discusses nutrition and selection of soybean versus fishmeal for aquaculture feeds.  Written for the Aquaculture Innovation Workshop, January 2011.

    Author(s): Rick Barrows
  • Agar factory waste was tried as fuel for cooking and manure for cow pea. Seedlings of cow pea (Vigna ungiculata) supplied with agar factory waste powder, showed improved seedling vigour. The total length of the seedlings (85 - 87%), wet weight (194 - 329%), number of leaves (31 - 38 %) and number of root nodules (42 - 92%) increased than those of control. Out of the two treatments of basal application of agar waste powder, one time application at the time of sowing seeds registered maximum vigour over the control as well as the other treatment which received similar quantity in three intervals. As the 'fuel cakes' prepared out of agar factory waste registered high energy content (19 %), high ash content (20 %) and high rate of combustibility (5 min and 20 sec), these ' fuel cakes' can be ideally used as fuel for cooking.

    Author(s): Kunda , Sumanth Kumar, Kaladharan, P
  • Agar is manufactured from the red algae Gelidium and Gracilaria. It is one of the commercially important marine products. The agar produced from Gelidium and Gelidiella is considered as the first grade agar and fetches high price. The presence of sulphate content in Gracilaria agar affects the quality of the agar and it is usually sold low price. It is used only as food grade agar. The different Indian and foreign technologies for production of Gracilaria agar with improved yield and quality are given in this paper.

    Author(s): Ramalingam , J R , Kaliaperumal, N, Kalimuthu, S
  • Studies were made on the yield and physical properties of agar from Gelidiella aceiosa, Gracilaria arcuata and G. edulis and algin and mannitol from Padim boergesenii, Chnoospom implexa, Sargassum duplkatum, Turbimria conoides and T, ormta growing in eight islands of Lakshadweep. The yield of agar ranged from 16.9 to 43.1 % and gel strength from 42 to 278 gm/cm* in G. acerosa, G. arcuala and G. edulis. Algin varied from 4.4 to 27.3%and mannitol from 1.4 to 9.5% in the brown algae studied. The agar and algin yielding seaweeds can be exploited from Lakshadweep Islands as an additional resource of raw material to the Indian seaweed industries.

    Author(s): Kaliaperumal, N, Kalimuthu, S, Ramalingam, J R
  • A pioneering project in the Netherlands aims to determine whether offshore wind developments could double up as seaweed farms. The end result could be a nice revenue stream to wind farm operations, at relatively low cost, which is likely to be of interest to renewable power companies. 
    Author(s): Jason Deign
  • The world is faced with the vast challenge of meeting ever-increasing food demands placed on the agriculture sector due to a rapidly growing population. In fact, the world population has been increasing by an estimated 78 million each year, about the size of the population of Germany. Challenges around food security – ensuring there is enough food to meet demand – will be exacerbated when the population surpasses 9 billion by 2050 and 10 billion by the turn of the century. 

    Global food production must be 70 percent greater than today’s level to close the deficit between supply and demand, commonly referred to as the productivity gap.  And, it must be done without using substantially more land. With current grain stocks at historically low levels and food demand increasing at rates higher than production, the challenge is not decades into the future, but is here today.


    Author(s): DUPONT Advisory Committee
  • IEA Advanced Motor Fuels algal biofuels summary report.

    Author(s): IEA - Advanced Motor Fuels
  • A PDF Power Point of "Algae Co-Products as Potential Alternative Ingredients for Sea Urchins".

    Author(s): Addison L. Lawrence, Stephen A. Watts, John M. Lawrence
  • Algae have recently received a lot of attention as a new biomass source for the production of renewable energy. Some of the main characteristics which set algae apart from other biomass sources are that algae (can) have a high biomass yield per unit of light and area, can have a high oil or starch content, do not require agricultural land, fresh water is not essential and nutrients can be supplied by wastewater and CO2 by combustion gas. 

  • The word weed, which carries often a derogative sense, means an economically useless plant (now animal too!) growing wild at the expense or to the detriment of a useful one that is or has been under cultivation. In this sense, the weed is worth only to be weeded out.

    Author(s): CMFRI, Kochi