Considerable investment through public/private consortia has been towards increasing the productivity from mass algal cultivation for making the industries involved more economically viable.
Although high-tech solutions have been popular in recent years, I questioned whether low-tech answers through the method that algae are cultivated could shed light on increasing productivity in mass cultivation systems.
The transcript reduction in these organs (via RNA-mediated gene silencing) resulted in higher plant productivity and mass of the roots [ 1].
However, these traits are difficult to translate to new pest species, are unstable, and compromise insect productivity in mass rearing [ 25, 26].
The inhibition by H2, being a function of the dissolved H2 concentration, was demonstrated to be mainly dependent on H2 productivity and mass transfer rate.
Where, WFENI composite indicators for Water-Energy consumption (the energy of human labor, machinery, diesel oil, fertilizer, pesticides, and irrigated water inputs in the crop's production system were considered), water energy mass productivity, and water energy economic productivity.
Through the proposed method, indicators considering the water and energy consumption, mass productivity, and economic productivity were suggested.
A two level factorial design was used to study the effect of the initial ratio of stearic acid POMF, initial humidity of the enzyme preparation and the enzyme substrate ratio on the yield, mass productivity and specific productivity.
This implies that EPA and DHA productivity in algal mass cultures first of all benefits from thorough species selection: Mass cultivation at low temperature would benefit greatly from the relatively high growth rates exhibited by polar species at these low temperatures (C. brevis: 0.47 d-1 at 3°C, compared to T. weissflogii at 16°C: 0.49 d-1), while having similar LC-PUFA contents.
Final dry cell weights of 2.3 g/L (dry cell mass productivity of 0.47 g/L/d) and 1.56 g/L (dry cell mass productivity of 0.3 g/L/d) were obtained at 5 days of cultivation of N. oleoabundans with 10 g/L of glucose or cellobiose, respectively (relative cell masses obtained in these cultures are reported in Figure 1a).
