Hawaii-based nutrition and health products company Cyanotech Corp. reported a net loss of $1.27 million, or 22 cents per diluted share, for the first quarter of 2019, compared to net income of $501,000, or 9 cents per diluted share, in the previous year. The Kailua-Kona-based microalgae technology company said the results for the quarter reflect the impact of a spirulina production shutdown and re-inoculation that was required during the period. The company also reported net sales were $7.1 million…